56456641 has 2 divisors, whose sum is σ = 56456642. Its totient is φ = 56456640.

The previous prime is 56456633. The next prime is 56456693. The reversal of 56456641 is 14665465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 11029041 = 6740^2 + 3321^2 .

It is a cyclic number.

It is not a de Polignac number, because 56456641 - 2³ = 56456633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56456641.

It is not a weakly prime, because it can be changed into another prime (56456041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28228320 + 28228321.

It is an arithmetic number, because the mean of its divisors is an integer number (28228321).

Almost surely, 2^56456641 is an apocalyptic number.

It is an amenable number.

56456641 is a deficient number, since it is larger than the sum of its proper divisors (1).

56456641 is an equidigital number, since it uses as much as digits as its factorization.

56456641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 56456641 is about 7513.7634378519. The cubic root of 56456641 is about 383.6233308197.

The spelling of 56456641 in words is "fifty-six million, four hundred fifty-six thousand, six hundred forty-one".