57521889 has 6 divisors (see below), whose sum is σ = 83087186. Its totient is φ = 38347920.

The previous prime is 57521887. The next prime is 57521899. The reversal of 57521889 is 98812575.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46131264 + 11390625 = 6792^2 + 3375^2 .

It is not a de Polignac number, because 57521889 - 2¹ = 57521887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57521887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3195652 + ... + 3195669.

Almost surely, 2^57521889 is an apocalyptic number.

It is an amenable number.

57521889 is a deficient number, since it is larger than the sum of its proper divisors (25565297).

57521889 is a wasteful number, since it uses less digits than its factorization.

57521889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391327 (or 6391324 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 57521889 is about 7584.3186246360. The cubic root of 57521889 is about 386.0211023211.

The spelling of 57521889 in words is "fifty-seven million, five hundred twenty-one thousand, eight hundred eighty-nine".