56774353531 has 4 divisors (see below), whose sum is σ = 64884975472. Its totient is φ = 48663731592.

The previous prime is 56774353513. The next prime is 56774353547. The reversal of 56774353531 is 13535347765.

56774353531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13535347765 = 5 ⋅2707069553.

It is not a de Polignac number, because 56774353531 - 2¹⁷ = 56774222459 is a prime.

It is a super-2 number, since 2×56774353531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56774350531) 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, 4055310960 + ... + 4055310973.

It is an arithmetic number, because the mean of its divisors is an integer number (16221243868).

Almost surely, 2^56774353531 is an apocalyptic number.

56774353531 is a deficient number, since it is larger than the sum of its proper divisors (8110621941).

56774353531 is an equidigital number, since it uses as much as digits as its factorization.

56774353531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110621940.

The product of its digits is 3969000, while the sum is 49.

The spelling of 56774353531 in words is "fifty-six billion, seven hundred seventy-four million, three hundred fifty-three thousand, five hundred thirty-one".