57145534 has 16 divisors (see below), whose sum is σ = 91179648. Its totient is φ = 26767872.

The previous prime is 57145531. The next prime is 57145549. The reversal of 57145534 is 43554175.

It is a super-2 number, since 2×57145534² = 6531224112290312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 57145534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57145531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3814 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (5698728).

Almost surely, 2^57145534 is an apocalyptic number.

57145534 is a deficient number, since it is larger than the sum of its proper divisors (34034114).

57145534 is a wasteful number, since it uses less digits than its factorization.

57145534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779.

The product of its digits is 42000, while the sum is 34.

The square root of 57145534 is about 7559.4665155684. The cubic root of 57145534 is about 385.1773714677.

The spelling of 57145534 in words is "fifty-seven million, one hundred forty-five thousand, five hundred thirty-four".