56261573 has 2 divisors, whose sum is σ = 56261574. Its totient is φ = 56261572.

The previous prime is 56261507. The next prime is 56261591. The reversal of 56261573 is 37516265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29398084 + 26863489 = 5422^2 + 5183^2 .

It is a cyclic number.

It is not a de Polignac number, because 56261573 - 2¹⁶ = 56196037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56261593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28130786 + 28130787.

It is an arithmetic number, because the mean of its divisors is an integer number (28130787).

Almost surely, 2^56261573 is an apocalyptic number.

It is an amenable number.

56261573 is a deficient number, since it is larger than the sum of its proper divisors (1).

56261573 is an equidigital number, since it uses as much as digits as its factorization.

56261573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 56261573 is about 7500.7714936532. The cubic root of 56261573 is about 383.1809914291.

The spelling of 56261573 in words is "fifty-six million, two hundred sixty-one thousand, five hundred seventy-three".