56005871 has 8 divisors (see below), whose sum is σ = 61213824. Its totient is φ = 51010560.

The previous prime is 56005867. The next prime is 56005879. The reversal of 56005871 is 17850065.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56005871 - 2² = 56005867 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 (56005879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52610 + ... + 53663.

It is an arithmetic number, because the mean of its divisors is an integer number (7651728).

Almost surely, 2^56005871 is an apocalyptic number.

56005871 is a deficient number, since it is larger than the sum of its proper divisors (5207953).

56005871 is a wasteful number, since it uses less digits than its factorization.

56005871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106321.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 56005871 is about 7483.7070359548. The cubic root of 56005871 is about 382.5996061099.

The spelling of 56005871 in words is "fifty-six million, five thousand, eight hundred seventy-one".