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253100000 = 25552531
BaseRepresentation
bin11110001010111…
…11111111100000
3122122020210221002
433011133333200
51004243200000
641040451132
76162212606
oct1705377740
9578223832
10253100000
1111a96085a
1270919aa8
134058971a
1425885876
15173478d5
hexf15ffe0

253100000 has 72 divisors (see below), whose sum is σ = 623069496. Its totient is φ = 101200000.

The previous prime is 253099949. The next prime is 253100033. The reversal of 253100000 is 1352.

It is a super-2 number, since 2×2531000002 = 128119220000000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98735 + ... + 101265.

It is an arithmetic number, because the mean of its divisors is an integer number (8653743).

Almost surely, 2253100000 is an apocalyptic number.

253100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311534748).

253100000 is an abundant number, since it is smaller than the sum of its proper divisors (369969496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253100000 is an frugal number, since it uses more digits than its factorization.

253100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 253100000 is about 15909.1168830957. The cubic root of 253100000 is about 632.5536727928.

Adding to 253100000 its reverse (1352), we get a palindrome (253101352).

The spelling of 253100000 in words is "two hundred fifty-three million, one hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 625 800 1000 1250 2000 2500 2531 3125 4000 5000 5062 6250 10000 10124 12500 12655 20000 20248 25000 25310 40496 50000 50620 63275 80992 100000 101240 126550 202480 253100 316375 404960 506200 632750 1012400 1265500 1581875 2024800 2531000 3163750 5062000 6327500 7909375 10124000 12655000 15818750 25310000 31637500 50620000 63275000 126550000 253100000