57611440 has 40 divisors (see below), whose sum is σ = 134620848. Its totient is φ = 22928640.

The previous prime is 57611417. The next prime is 57611447. The reversal of 57611440 is 4411675.

57611440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 57611399 and 57611408.

It is not an unprimeable number, because it can be changed into a prime (57611447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15174 + ... + 18586.

Almost surely, 2^57611440 is an apocalyptic number.

It is an amenable number.

57611440 is an abundant number, since it is smaller than the sum of its proper divisors (77009408).

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

57611440 is a wasteful number, since it uses less digits than its factorization.

57611440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637 (or 3631 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 57611440 is about 7590.2200231614. The cubic root of 57611440 is about 386.2213197390.

The spelling of 57611440 in words is "fifty-seven million, six hundred eleven thousand, four hundred forty".