57521725 has 6 divisors (see below), whose sum is σ = 71326970. Its totient is φ = 46017360.

The previous prime is 57521713. The next prime is 57521747. The reversal of 57521725 is 52712575.

It can be written as a sum of positive squares in 3 ways, for example, as 171396 + 57350329 = 414^2 + 7573^2 .

It is not a de Polignac number, because 57521725 - 2¹¹ = 57519677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1150410 + ... + 1150459.

Almost surely, 2^57521725 is an apocalyptic number.

It is an amenable number.

57521725 is a deficient number, since it is larger than the sum of its proper divisors (13805245).

57521725 is a wasteful number, since it uses less digits than its factorization.

57521725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300879 (or 2300874 counting only the distinct ones).

The product of its digits is 24500, while the sum is 34.

The square root of 57521725 is about 7584.3078128462. The cubic root of 57521725 is about 386.0207354607.

The spelling of 57521725 in words is "fifty-seven million, five hundred twenty-one thousand, seven hundred twenty-five".