56724641 has 2 divisors, whose sum is σ = 56724642. Its totient is φ = 56724640.

The previous prime is 56724623. The next prime is 56724683. The reversal of 56724641 is 14642765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 14409616 = 6505^2 + 3796^2 .

It is a cyclic number.

It is not a de Polignac number, because 56724641 - 2¹⁴ = 56708257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56724691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28362320 + 28362321.

It is an arithmetic number, because the mean of its divisors is an integer number (28362321).

Almost surely, 2^56724641 is an apocalyptic number.

It is an amenable number.

56724641 is a deficient number, since it is larger than the sum of its proper divisors (1).

56724641 is an equidigital number, since it uses as much as digits as its factorization.

56724641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 56724641 is about 7531.5762626425. The cubic root of 56724641 is about 384.2293935549.

The spelling of 56724641 in words is "fifty-six million, seven hundred twenty-four thousand, six hundred forty-one".