56404693 has 2 divisors, whose sum is σ = 56404694. Its totient is φ = 56404692.

The previous prime is 56404669. The next prime is 56404697. The reversal of 56404693 is 39640465.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29343889 + 27060804 = 5417^2 + 5202^2 .

It is a cyclic number.

It is not a de Polignac number, because 56404693 - 2⁵ = 56404661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56404697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28202346 + 28202347.

It is an arithmetic number, because the mean of its divisors is an integer number (28202347).

Almost surely, 2^56404693 is an apocalyptic number.

It is an amenable number.

56404693 is a deficient number, since it is larger than the sum of its proper divisors (1).

56404693 is an equidigital number, since it uses as much as digits as its factorization.

56404693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 56404693 is about 7510.3057860516. The cubic root of 56404693 is about 383.5056323530.

The spelling of 56404693 in words is "fifty-six million, four hundred four thousand, six hundred ninety-three".