57347520 has 224 divisors, whose sum is σ = 196632576. Its totient is φ = 14131200.

The previous prime is 57347513. The next prime is 57347527. The reversal of 57347520 is 2574375.

It is an interprime number because it is at equal distance from previous prime (57347513) and next prime (57347527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57347527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1220137 + ... + 1220183.

It is an arithmetic number, because the mean of its divisors is an integer number (877824).

Almost surely, 2^57347520 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 57347520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98316288).

57347520 is an abundant number, since it is smaller than the sum of its proper divisors (139285056).

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

57347520 is a wasteful number, since it uses less digits than its factorization.

57347520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 57347520 is about 7572.8145362210. The cubic root of 57347520 is about 385.6306524533.

The spelling of 57347520 in words is "fifty-seven million, three hundred forty-seven thousand, five hundred twenty".