57242886 has 16 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 19067528.

The previous prime is 57242849. The next prime is 57242981. The reversal of 57242886 is 68824275.

It is a happy number.

57242886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 9895 + ... + 14573.

It is an arithmetic number, because the mean of its divisors is an integer number (7160400).

Almost surely, 2^57242886 is an apocalyptic number.

57242886 is an abundant number, since it is smaller than the sum of its proper divisors (57323514).

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

57242886 is a wasteful number, since it uses less digits than its factorization.

57242886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723.

The product of its digits is 215040, while the sum is 42.

The square root of 57242886 is about 7565.9028542534. The cubic root of 57242886 is about 385.3959742261.

The spelling of 57242886 in words is "fifty-seven million, two hundred forty-two thousand, eight hundred eighty-six".