57291969 has 16 divisors (see below), whose sum is σ = 87863168. Its totient is φ = 32527872.

The previous prime is 57291961. The next prime is 57291977. The reversal of 57291969 is 96919275.

It is an interprime number because it is at equal distance from previous prime (57291961) and next prime (57291977).

It is not a de Polignac number, because 57291969 - 2³ = 57291961 is a prime.

It is a super-2 number, since 2×57291969² = 6564739423793922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57291961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5392 + ... + 11985.

It is an arithmetic number, because the mean of its divisors is an integer number (5491448).

Almost surely, 2^57291969 is an apocalyptic number.

It is an amenable number.

57291969 is a deficient number, since it is larger than the sum of its proper divisors (30571199).

57291969 is a wasteful number, since it uses less digits than its factorization.

57291969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17544.

The product of its digits is 306180, while the sum is 48.

The square root of 57291969 is about 7569.1458567001. The cubic root of 57291969 is about 385.5060955464.

The spelling of 57291969 in words is "fifty-seven million, two hundred ninety-one thousand, nine hundred sixty-nine".