57117890 has 16 divisors (see below), whose sum is σ = 103180608. Its totient is φ = 22765296.

The previous prime is 57117887. The next prime is 57117913. The reversal of 57117890 is 9871175.

57117890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×57117890³ (a number of 24 digits) contains 333 as substring.

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, 7262 + ... + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (6448788).

Almost surely, 2^57117890 is an apocalyptic number.

57117890 is a deficient number, since it is larger than the sum of its proper divisors (46062718).

57117890 is a wasteful number, since it uses less digits than its factorization.

57117890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20473.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 57117890 is about 7557.6378584846. The cubic root of 57117890 is about 385.1152519404.

The spelling of 57117890 in words is "fifty-seven million, one hundred seventeen thousand, eight hundred ninety".