57118869 has 12 divisors (see below), whose sum is σ = 82642092. Its totient is φ = 38016000.

The previous prime is 57118829. The next prime is 57118871. The reversal of 57118869 is 96881175.

57118869 is a `hidden beast` number, since 571 + 18 + 8 + 69 = 666.

57118869 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 53363025 + 3755844 = 7305^2 + 1938^2 .

It is not a de Polignac number, because 57118869 - 2¹⁷ = 56987797 is a prime.

It is a super-2 number, since 2×57118869² = 6525130391678322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57118829) 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 11 ways as a sum of consecutive naturals, for example, 819 + ... + 10719.

It is an arithmetic number, because the mean of its divisors is an integer number (6886841).

Almost surely, 2^57118869 is an apocalyptic number.

It is an amenable number.

57118869 is a deficient number, since it is larger than the sum of its proper divisors (25523223).

57118869 is a wasteful number, since it uses less digits than its factorization.

57118869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548 (or 10545 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 57118869 is about 7557.7026271216. The cubic root of 57118869 is about 385.1174522182.

The spelling of 57118869 in words is "fifty-seven million, one hundred eighteen thousand, eight hundred sixty-nine".