56171996 has 12 divisors (see below), whose sum is σ = 99768648. Its totient is φ = 27666672.

The previous prime is 56171981. The next prime is 56172001. The reversal of 56171996 is 69917165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104531 + ... + 105066.

It is an arithmetic number, because the mean of its divisors is an integer number (8314054).

Almost surely, 2^56171996 is an apocalyptic number.

It is an amenable number.

56171996 is a deficient number, since it is larger than the sum of its proper divisors (43596652).

56171996 is a wasteful number, since it uses less digits than its factorization.

56171996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209668 (or 209666 counting only the distinct ones).

The product of its digits is 102060, while the sum is 44.

The square root of 56171996 is about 7494.7979292306. The cubic root of 56171996 is about 382.9775225579.

The spelling of 56171996 in words is "fifty-six million, one hundred seventy-one thousand, nine hundred ninety-six".