55813057 has 16 divisors (see below), whose sum is σ = 61436880. Its totient is φ = 50485248.

The previous prime is 55813049. The next prime is 55813061. The reversal of 55813057 is 75031855.

55813057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 8904256 + 46908801 = 2984^2 + 6849^2 .

It is a cyclic number.

It is not a de Polignac number, because 55813057 - 2³ = 55813049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55813027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55483 + ... + 56479.

It is an arithmetic number, because the mean of its divisors is an integer number (3839805).

Almost surely, 2^55813057 is an apocalyptic number.

It is an amenable number.

55813057 is a deficient number, since it is larger than the sum of its proper divisors (5623823).

55813057 is a wasteful number, since it uses less digits than its factorization.

55813057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 55813057 is about 7470.8136772376. The cubic root of 55813057 is about 382.1600368338.

The spelling of 55813057 in words is "fifty-five million, eight hundred thirteen thousand, fifty-seven".