56548813 has 4 divisors (see below), whose sum is σ = 57230208. Its totient is φ = 55867420.

The previous prime is 56548787. The next prime is 56548823. The reversal of 56548813 is 31884565.

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.

It is a cyclic number.

It is not a de Polignac number, because 56548813 - 2⁵ = 56548781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56548823) 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, 340573 + ... + 340738.

It is an arithmetic number, because the mean of its divisors is an integer number (14307552).

Almost surely, 2^56548813 is an apocalyptic number.

It is an amenable number.

56548813 is a deficient number, since it is larger than the sum of its proper divisors (681395).

56548813 is an equidigital number, since it uses as much as digits as its factorization.

56548813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681394.

The product of its digits is 115200, while the sum is 40.

The square root of 56548813 is about 7519.8944806427. The cubic root of 56548813 is about 383.8319871368.

It can be divided in two parts, 5654881 and 3, that added together give a square (5654884 = 2378²).

The spelling of 56548813 in words is "fifty-six million, five hundred forty-eight thousand, eight hundred thirteen".