57566413 has 8 divisors (see below), whose sum is σ = 59934968. Its totient is φ = 55240704.

The previous prime is 57566389. The next prime is 57566429. The reversal of 57566413 is 31466575.

It can be written as a sum of positive squares in 4 ways, for example, as 14768649 + 42797764 = 3843^2 + 6542^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57566413 - 2⁹ = 57565901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57566213) 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, 7956 + ... + 13357.

It is an arithmetic number, because the mean of its divisors is an integer number (7491871).

Almost surely, 2^57566413 is an apocalyptic number.

It is an amenable number.

57566413 is a deficient number, since it is larger than the sum of its proper divisors (2368555).

57566413 is a wasteful number, since it uses less digits than its factorization.

57566413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21423.

The product of its digits is 75600, while the sum is 37.

The square root of 57566413 is about 7587.2533238320. The cubic root of 57566413 is about 386.1206746826.

The spelling of 57566413 in words is "fifty-seven million, five hundred sixty-six thousand, four hundred thirteen".