57120818 has 8 divisors (see below), whose sum is σ = 85722780. Its totient is φ = 28546560.

The previous prime is 57120809. The next prime is 57120829. The reversal of 57120818 is 81802175.

It is a happy number.

57120818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 10975969 = 6793^2 + 3313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 623 + ... + 10706.

Almost surely, 2^57120818 is an apocalyptic number.

57120818 is a deficient number, since it is larger than the sum of its proper divisors (28601962).

57120818 is a wasteful number, since it uses less digits than its factorization.

57120818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13852.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 57120818 is about 7557.8315673214. The cubic root of 57120818 is about 385.1218324717.

The spelling of 57120818 in words is "fifty-seven million, one hundred twenty thousand, eight hundred eighteen".