56644451 has 2 divisors, whose sum is σ = 56644452. Its totient is φ = 56644450.

The previous prime is 56644433. The next prime is 56644457. The reversal of 56644451 is 15444665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56644451 - 2⁶ = 56644387 is a prime.

It is not a weakly prime, because it can be changed into another prime (56644457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28322225 + 28322226.

It is an arithmetic number, because the mean of its divisors is an integer number (28322226).

Almost surely, 2^56644451 is an apocalyptic number.

56644451 is a deficient number, since it is larger than the sum of its proper divisors (1).

56644451 is an equidigital number, since it uses as much as digits as its factorization.

56644451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 35.

The square root of 56644451 is about 7526.2507930576. The cubic root of 56644451 is about 384.0482501400.

The spelling of 56644451 in words is "fifty-six million, six hundred forty-four thousand, four hundred fifty-one".