57155469 has 16 divisors (see below), whose sum is σ = 87513600. Its totient is φ = 32502960.

The previous prime is 57155459. The next prime is 57155509. The reversal of 57155469 is 96455175.

It is not a de Polignac number, because 57155469 - 2⁹ = 57154957 is a prime.

It is a super-2 number, since 2×57155469² = 6533495273219922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57155469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57155419) 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, 2019 + ... + 10880.

It is an arithmetic number, because the mean of its divisors is an integer number (5469600).

Almost surely, 2^57155469 is an apocalyptic number.

It is an amenable number.

57155469 is a deficient number, since it is larger than the sum of its proper divisors (30358131).

57155469 is a wasteful number, since it uses less digits than its factorization.

57155469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13120.

The product of its digits is 189000, while the sum is 42.

The square root of 57155469 is about 7560.1236101006. The cubic root of 57155469 is about 385.1996917621.

The spelling of 57155469 in words is "fifty-seven million, one hundred fifty-five thousand, four hundred sixty-nine".