56574257537 has 4 divisors (see below), whose sum is σ = 64656294336. Its totient is φ = 48492220740.

The previous prime is 56574257497. The next prime is 56574257573. The reversal of 56574257537 is 73575247565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73575247565 = 5 ⋅14715049513.

It is a cyclic number.

It is not a de Polignac number, because 56574257537 - 2¹⁸ = 56573995393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56574251537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4041018389 + ... + 4041018402.

It is an arithmetic number, because the mean of its divisors is an integer number (16164073584).

Almost surely, 2^56574257537 is an apocalyptic number.

It is an amenable number.

56574257537 is a deficient number, since it is larger than the sum of its proper divisors (8082036799).

56574257537 is an equidigital number, since it uses as much as digits as its factorization.

56574257537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082036798.

The product of its digits is 30870000, while the sum is 56.

The spelling of 56574257537 in words is "fifty-six billion, five hundred seventy-four million, two hundred fifty-seven thousand, five hundred thirty-seven".