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53205261 = 350934843
BaseRepresentation
bin1100101011110…
…1100100001101
310201010002220020
43022331210031
5102110032021
65140212353
71214144244
oct312754415
9121102806
1053205261
112803a99a
121599a0b9
13b03b305
1470cd95b
154a0e7c6
hex32bd90d

53205261 has 8 divisors (see below), whose sum is σ = 71081760. Its totient is φ = 35399472.

The previous prime is 53205239. The next prime is 53205283. The reversal of 53205261 is 16250235.

It is an interprime number because it is at equal distance from previous prime (53205239) and next prime (53205283).

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

It is not a de Polignac number, because 53205261 - 213 = 53197069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53205221) 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, 15895 + ... + 18948.

It is an arithmetic number, because the mean of its divisors is an integer number (8885220).

Almost surely, 253205261 is an apocalyptic number.

It is an amenable number.

53205261 is a deficient number, since it is larger than the sum of its proper divisors (17876499).

53205261 is a wasteful number, since it uses less digits than its factorization.

53205261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35355.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 53205261 is about 7294.1936497464. The cubic root of 53205261 is about 376.1128683526.

Adding to 53205261 its reverse (16250235), we get a palindrome (69455496).

The spelling of 53205261 in words is "fifty-three million, two hundred five thousand, two hundred sixty-one".

Divisors: 1 3 509 1527 34843 104529 17735087 53205261