56547473 has 2 divisors, whose sum is σ = 56547474. Its totient is φ = 56547472.

The previous prime is 56547443. The next prime is 56547481. The reversal of 56547473 is 37474565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53831569 + 2715904 = 7337^2 + 1648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56547473 is a prime.

It is equal to p_3368975 and since 56547473 and 3368975 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56547473.

It is not a weakly prime, because it can be changed into another prime (56547443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28273736 + 28273737.

It is an arithmetic number, because the mean of its divisors is an integer number (28273737).

Almost surely, 2^56547473 is an apocalyptic number.

It is an amenable number.

56547473 is a deficient number, since it is larger than the sum of its proper divisors (1).

56547473 is an equidigital number, since it uses as much as digits as its factorization.

56547473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 41.

The square root of 56547473 is about 7519.8053831200. The cubic root of 56547473 is about 383.8289553082.

The spelling of 56547473 in words is "fifty-six million, five hundred forty-seven thousand, four hundred seventy-three".