57115554 has 16 divisors (see below), whose sum is σ = 114708000. Its totient is φ = 18959040.

The previous prime is 57115549. The next prime is 57115559. The reversal of 57115554 is 45551175.

It is a happy number.

57115554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57115549) and next prime (57115559).

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18304 + ... + 21195.

It is an arithmetic number, because the mean of its divisors is an integer number (7169250).

Almost surely, 2^57115554 is an apocalyptic number.

57115554 is an abundant number, since it is smaller than the sum of its proper divisors (57592446).

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

57115554 is a wasteful number, since it uses less digits than its factorization.

57115554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39745.

The product of its digits is 17500, while the sum is 33.

The square root of 57115554 is about 7557.4833112618. The cubic root of 57115554 is about 385.1100017377.

The spelling of 57115554 in words is "fifty-seven million, one hundred fifteen thousand, five hundred fifty-four".