57261230 has 16 divisors (see below), whose sum is σ = 110998944. Its totient is φ = 21142560.

The previous prime is 57261209. The next prime is 57261233. The reversal of 57261230 is 3216275.

It is a super-2 number, since 2×57261230² = 6557696922225800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 57261230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57261233) 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, 220106 + ... + 220365.

It is an arithmetic number, because the mean of its divisors is an integer number (6937434).

Almost surely, 2^57261230 is an apocalyptic number.

57261230 is a deficient number, since it is larger than the sum of its proper divisors (53737714).

57261230 is a wasteful number, since it uses less digits than its factorization.

57261230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440491.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 57261230 is about 7567.1150381106. The cubic root of 57261230 is about 385.4371377034.

The spelling of 57261230 in words is "fifty-seven million, two hundred sixty-one thousand, two hundred thirty".