57565040 has 40 divisors (see below), whose sum is σ = 144136608. Its totient is φ = 21254400.

The previous prime is 57564979. The next prime is 57565063. The reversal of 57565040 is 4056575.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 57564988 and 57565006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26636 + ... + 28715.

Almost surely, 2^57565040 is an apocalyptic number.

It is an amenable number.

57565040 is an abundant number, since it is smaller than the sum of its proper divisors (86571568).

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

57565040 is a wasteful number, since it uses less digits than its factorization.

57565040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55377 (or 55371 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 57565040 is about 7587.1628425914. The cubic root of 57565040 is about 386.1176049070.

The spelling of 57565040 in words is "fifty-seven million, five hundred sixty-five thousand, forty".