56901111 has 4 divisors (see below), whose sum is σ = 75868152. Its totient is φ = 37934072.

The previous prime is 56901107. The next prime is 56901113. The reversal of 56901111 is 11110965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56901111 - 2² = 56901107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56901113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9483516 + ... + 9483521.

It is an arithmetic number, because the mean of its divisors is an integer number (18967038).

Almost surely, 2^56901111 is an apocalyptic number.

56901111 is a deficient number, since it is larger than the sum of its proper divisors (18967041).

56901111 is a wasteful number, since it uses less digits than its factorization.

56901111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18967040.

The product of its (nonzero) digits is 270, while the sum is 24.

The square root of 56901111 is about 7543.2825082984. The cubic root of 56901111 is about 384.6274261533.

The spelling of 56901111 in words is "fifty-six million, nine hundred one thousand, one hundred eleven".