56911853 has 2 divisors, whose sum is σ = 56911854. Its totient is φ = 56911852.

The previous prime is 56911847. The next prime is 56911861. The reversal of 56911853 is 35811965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 1885129 = 7418^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 56911853 - 2²⁰ = 55863277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56911823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28455926 + 28455927.

It is an arithmetic number, because the mean of its divisors is an integer number (28455927).

Almost surely, 2^56911853 is an apocalyptic number.

It is an amenable number.

56911853 is a deficient number, since it is larger than the sum of its proper divisors (1).

56911853 is an equidigital number, since it uses as much as digits as its factorization.

56911853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 56911853 is about 7543.9944989375. The cubic root of 56911853 is about 384.6516284214.

The spelling of 56911853 in words is "fifty-six million, nine hundred eleven thousand, eight hundred fifty-three".