56813445 has 24 divisors (see below), whose sum is σ = 106052856. Its totient is φ = 27969408.

The previous prime is 56813441. The next prime is 56813447. The reversal of 56813445 is 54431865.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5919489 + 50893956 = 2433^2 + 7134^2 .

It is not a de Polignac number, because 56813445 - 2² = 56813441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56813441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47974 + ... + 49143.

It is an arithmetic number, because the mean of its divisors is an integer number (4418869).

Almost surely, 2^56813445 is an apocalyptic number.

It is an amenable number.

56813445 is a deficient number, since it is larger than the sum of its proper divisors (49239411).

56813445 is a wasteful number, since it uses less digits than its factorization.

56813445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97141 (or 97138 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 56813445 is about 7537.4694029230. The cubic root of 56813445 is about 384.4297962728.

The spelling of 56813445 in words is "fifty-six million, eight hundred thirteen thousand, four hundred forty-five".