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531639053 = 11101478523
BaseRepresentation
bin11111101100000…
…010101100001101
31101001101001200022
4133230002230031
52042044422203
6124430511525
716113600041
oct3754025415
91331331608
10531639053
11253107320
1212a0655a5
13861b212a
1450870021
1531a17a38
hex1fb02b0d

531639053 has 8 divisors (see below), whose sum is σ = 585713376. Its totient is φ = 478522000.

The previous prime is 531639041. The next prime is 531639067. The reversal of 531639053 is 350936135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-531639053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531639083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238151 + ... + 240372.

It is an arithmetic number, because the mean of its divisors is an integer number (73214172).

Almost surely, 2531639053 is an apocalyptic number.

It is an amenable number.

531639053 is a deficient number, since it is larger than the sum of its proper divisors (54074323).

531639053 is a wasteful number, since it uses less digits than its factorization.

531639053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478635.

The product of its (nonzero) digits is 36450, while the sum is 35.

The square root of 531639053 is about 23057.2993431581. The cubic root of 531639053 is about 810.1006088514.

The spelling of 531639053 in words is "five hundred thirty-one million, six hundred thirty-nine thousand, fifty-three".

Divisors: 1 11 101 1111 478523 5263753 48330823 531639053