56355571 has 2 divisors, whose sum is σ = 56355572. Its totient is φ = 56355570.

The previous prime is 56355553. The next prime is 56355581. The reversal of 56355571 is 17555365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56355571 - 2¹⁵ = 56322803 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56355571.

It is not a weakly prime, because it can be changed into another prime (56355581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28177785 + 28177786.

It is an arithmetic number, because the mean of its divisors is an integer number (28177786).

Almost surely, 2^56355571 is an apocalyptic number.

56355571 is a deficient number, since it is larger than the sum of its proper divisors (1).

56355571 is an equidigital number, since it uses as much as digits as its factorization.

56355571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78750, while the sum is 37.

The square root of 56355571 is about 7507.0347674698. The cubic root of 56355571 is about 383.3942702538.

The spelling of 56355571 in words is "fifty-six million, three hundred fifty-five thousand, five hundred seventy-one".