57513906 has 12 divisors (see below), whose sum is σ = 124613502. Its totient is φ = 19171296.

The previous prime is 57513901. The next prime is 57513913. The reversal of 57513906 is 60931575.

It is a happy number.

57513906 is a `hidden beast` number, since 57 + 513 + 90 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37933281 + 19580625 = 6159^2 + 4425^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57513901) 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, 1597591 + ... + 1597626.

Almost surely, 2^57513906 is an apocalyptic number.

57513906 is an abundant number, since it is smaller than the sum of its proper divisors (67099596).

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

57513906 is a wasteful number, since it uses less digits than its factorization.

57513906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195225 (or 3195222 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 57513906 is about 7583.7923231059. The cubic root of 57513906 is about 386.0032439077.

The spelling of 57513906 in words is "fifty-seven million, five hundred thirteen thousand, nine hundred six".