56787473 has 2 divisors, whose sum is σ = 56787474. Its totient is φ = 56787472.

The previous prime is 56787461. The next prime is 56787509. The reversal of 56787473 is 37478765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48539089 + 8248384 = 6967^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 56787473 - 2⁴ = 56787457 is a prime.

It is not a weakly prime, because it can be changed into another prime (56787403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28393736 + 28393737.

It is an arithmetic number, because the mean of its divisors is an integer number (28393737).

Almost surely, 2^56787473 is an apocalyptic number.

It is an amenable number.

56787473 is a deficient number, since it is larger than the sum of its proper divisors (1).

56787473 is an equidigital number, since it uses as much as digits as its factorization.

56787473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 47.

The square root of 56787473 is about 7535.7463465804. The cubic root of 56787473 is about 384.3712072510.

The spelling of 56787473 in words is "fifty-six million, seven hundred eighty-seven thousand, four hundred seventy-three".