56863537 has 2 divisors, whose sum is σ = 56863538. Its totient is φ = 56863536.

The previous prime is 56863511. The next prime is 56863571. The reversal of 56863537 is 73536865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 14470416 = 6511^2 + 3804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56863537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56863493 and 56863502.

It is not a weakly prime, because it can be changed into another prime (56863507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28431768 + 28431769.

It is an arithmetic number, because the mean of its divisors is an integer number (28431769).

Almost surely, 2^56863537 is an apocalyptic number.

It is an amenable number.

56863537 is a deficient number, since it is larger than the sum of its proper divisors (1).

56863537 is an equidigital number, since it uses as much as digits as its factorization.

56863537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The square root of 56863537 is about 7540.7915367022. The cubic root of 56863537 is about 384.5427460659.

The spelling of 56863537 in words is "fifty-six million, eight hundred sixty-three thousand, five hundred thirty-seven".