56205911 has 2 divisors, whose sum is σ = 56205912. Its totient is φ = 56205910.

The previous prime is 56205887. The next prime is 56205913. The reversal of 56205911 is 11950265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56205911 - 2⁶ = 56205847 is a prime.

It is a Sophie Germain prime.

Together with 56205913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56205913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28102955 + 28102956.

It is an arithmetic number, because the mean of its divisors is an integer number (28102956).

Almost surely, 2^56205911 is an apocalyptic number.

56205911 is a deficient number, since it is larger than the sum of its proper divisors (1).

56205911 is an equidigital number, since it uses as much as digits as its factorization.

56205911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 56205911 is about 7497.0601571549. The cubic root of 56205911 is about 383.0545839077.

The spelling of 56205911 in words is "fifty-six million, two hundred five thousand, nine hundred eleven".