57115552 has 48 divisors (see below), whose sum is σ = 121800672. Its totient is φ = 26208000.

The previous prime is 57115549. The next prime is 57115559. The reversal of 57115552 is 25551175.

It is not an unprimeable number, because it can be changed into a prime (57115559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104143 + ... + 104689.

It is an arithmetic number, because the mean of its divisors is an integer number (2537514).

Almost surely, 2^57115552 is an apocalyptic number.

57115552 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57115552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60900336).

57115552 is an abundant number, since it is smaller than the sum of its proper divisors (64685120).

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

57115552 is a wasteful number, since it uses less digits than its factorization.

57115552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 813 counting only the distinct ones).

The product of its digits is 8750, while the sum is 31.

The square root of 57115552 is about 7557.4831789426. The cubic root of 57115552 is about 385.1099972426.

The spelling of 57115552 in words is "fifty-seven million, one hundred fifteen thousand, five hundred fifty-two".