57502720 has 88 divisors (see below), whose sum is σ = 150626448. Its totient is φ = 20889600.

The previous prime is 57502703. The next prime is 57502733. The reversal of 57502720 is 2720575.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55810 + ... + 56830.

Almost surely, 2^57502720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57502720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75313224).

57502720 is an abundant number, since it is smaller than the sum of its proper divisors (93123728).

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

57502720 is a wasteful number, since it uses less digits than its factorization.

57502720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 57502720 is about 7583.0547934193. The cubic root of 57502720 is about 385.9782174254.

The spelling of 57502720 in words is "fifty-seven million, five hundred two thousand, seven hundred twenty".