56344721 has 2 divisors, whose sum is σ = 56344722. Its totient is φ = 56344720.

The previous prime is 56344711. The next prime is 56344751. The reversal of 56344721 is 12744365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55294096 + 1050625 = 7436^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 56344721 - 2⁶ = 56344657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56344711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28172360 + 28172361.

It is an arithmetic number, because the mean of its divisors is an integer number (28172361).

Almost surely, 2^56344721 is an apocalyptic number.

It is an amenable number.

56344721 is a deficient number, since it is larger than the sum of its proper divisors (1).

56344721 is an equidigital number, since it uses as much as digits as its factorization.

56344721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 56344721 is about 7506.3120771788. The cubic root of 56344721 is about 383.3696640214.

The spelling of 56344721 in words is "fifty-six million, three hundred forty-four thousand, seven hundred twenty-one".