57561525 has 108 divisors (see below), whose sum is σ = 125697312. Its totient is φ = 25058880.

The previous prime is 57561487. The next prime is 57561527. The reversal of 57561525 is 52516575.

It is a happy number.

57561525 is a `hidden beast` number, since 5 + 75 + 61 + 525 = 666.

It is not a de Polignac number, because 57561525 - 2¹⁰ = 57560501 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57561525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57561527) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 253462 + ... + 253688.

It is an arithmetic number, because the mean of its divisors is an integer number (1163864).

Almost surely, 2^57561525 is an apocalyptic number.

It is an amenable number.

57561525 is an abundant number, since it is smaller than the sum of its proper divisors (68135787).

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

57561525 is a wasteful number, since it uses less digits than its factorization.

57561525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 265 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 57561525 is about 7586.9311977901. The cubic root of 57561525 is about 386.1097457909.

The spelling of 57561525 in words is "fifty-seven million, five hundred sixty-one thousand, five hundred twenty-five".