56871895 has 4 divisors (see below), whose sum is σ = 68246280. Its totient is φ = 45497512.

The previous prime is 56871877. The next prime is 56871901. The reversal of 56871895 is 59817865.

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 56871895 - 2⁷ = 56871767 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5687185 + ... + 5687194.

It is an arithmetic number, because the mean of its divisors is an integer number (17061570).

Almost surely, 2^56871895 is an apocalyptic number.

56871895 is a deficient number, since it is larger than the sum of its proper divisors (11374385).

56871895 is a wasteful number, since it uses less digits than its factorization.

56871895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374384.

The product of its digits is 604800, while the sum is 49.

The square root of 56871895 is about 7541.3457021940. The cubic root of 56871895 is about 384.5615856187.

The spelling of 56871895 in words is "fifty-six million, eight hundred seventy-one thousand, eight hundred ninety-five".