56171995 has 16 divisors (see below), whose sum is σ = 77861088. Its totient is φ = 38448640.

The previous prime is 56171981. The next prime is 56172001. The reversal of 56171995 is 59917165.

It is not a de Polignac number, because 56171995 - 2⁵ = 56171963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29104 + ... + 30973.

It is an arithmetic number, because the mean of its divisors is an integer number (4866318).

Almost surely, 2^56171995 is an apocalyptic number.

56171995 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56171995 is a deficient number, since it is larger than the sum of its proper divisors (21689093).

56171995 is a wasteful number, since it uses less digits than its factorization.

56171995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60110.

The product of its digits is 85050, while the sum is 43.

The square root of 56171995 is about 7494.7978625177. The cubic root of 56171995 is about 382.9775202853.

The spelling of 56171995 in words is "fifty-six million, one hundred seventy-one thousand, nine hundred ninety-five".