57169145 has 32 divisors (see below), whose sum is σ = 79985664. Its totient is φ = 38808000.

The previous prime is 57169127. The next prime is 57169187. The reversal of 57169145 is 54196175.

It is a de Polignac number, because none of the positive numbers 2^k-57169145 is a prime.

It is a super-2 number, since 2×57169145² = 6536622280062050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57169099 and 57169108.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53870 + ... + 54920.

It is an arithmetic number, because the mean of its divisors is an integer number (2499552).

Almost surely, 2^57169145 is an apocalyptic number.

57169145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57169145 is a deficient number, since it is larger than the sum of its proper divisors (22816519).

57169145 is a wasteful number, since it uses less digits than its factorization.

57169145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its digits is 37800, while the sum is 38.

The square root of 57169145 is about 7561.0280385672. The cubic root of 57169145 is about 385.2304124786.

The spelling of 57169145 in words is "fifty-seven million, one hundred sixty-nine thousand, one hundred forty-five".