57009888 has 72 divisors (see below), whose sum is σ = 174604248. Its totient is φ = 17540352.

The previous prime is 57009863. The next prime is 57009913. The reversal of 57009888 is 88890075.

It is an interprime number because it is at equal distance from previous prime (57009863) and next prime (57009913).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3870 + ... + 11357.

It is an arithmetic number, because the mean of its divisors is an integer number (2425059).

Almost surely, 2^57009888 is an apocalyptic number.

It is an amenable number.

57009888 is an abundant number, since it is smaller than the sum of its proper divisors (117594360).

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

57009888 is a wasteful number, since it uses less digits than its factorization.

57009888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15256 (or 15245 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 57009888 is about 7550.4892556708. The cubic root of 57009888 is about 384.8723656300.

The spelling of 57009888 in words is "fifty-seven million, nine thousand, eight hundred eighty-eight".