56401885 has 4 divisors (see below), whose sum is σ = 67682268. Its totient is φ = 45121504.

The previous prime is 56401883. The next prime is 56401913. The reversal of 56401885 is 58810465.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9369721 + 47032164 = 3061^2 + 6858^2 .

It is a cyclic number.

It is not a de Polignac number, because 56401885 - 2¹ = 56401883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56401883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5640184 + ... + 5640193.

It is an arithmetic number, because the mean of its divisors is an integer number (16920567).

Almost surely, 2^56401885 is an apocalyptic number.

It is an amenable number.

56401885 is a deficient number, since it is larger than the sum of its proper divisors (11280383).

56401885 is a wasteful number, since it uses less digits than its factorization.

56401885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11280382.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 56401885 is about 7510.1188406043. The cubic root of 56401885 is about 383.4992682154.

The spelling of 56401885 in words is "fifty-six million, four hundred one thousand, eight hundred eighty-five".