56503897 has 2 divisors, whose sum is σ = 56503898. Its totient is φ = 56503896.

The previous prime is 56503877. The next prime is 56503927. The reversal of 56503897 is 79830565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49970761 + 6533136 = 7069^2 + 2556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56503897 is a prime.

It is not a weakly prime, because it can be changed into another prime (56503817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28251948 + 28251949.

It is an arithmetic number, because the mean of its divisors is an integer number (28251949).

Almost surely, 2^56503897 is an apocalyptic number.

It is an amenable number.

56503897 is a deficient number, since it is larger than the sum of its proper divisors (1).

56503897 is an equidigital number, since it uses as much as digits as its factorization.

56503897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 56503897 is about 7516.9074093007. The cubic root of 56503897 is about 383.7303359367.

The spelling of 56503897 in words is "fifty-six million, five hundred three thousand, eight hundred ninety-seven".