56121996 has 48 divisors (see below), whose sum is σ = 150101504. Its totient is φ = 15987456.

The previous prime is 56121983. The next prime is 56122037. The reversal of 56121996 is 69912165.

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, 35601 + ... + 37143.

Almost surely, 2^56121996 is an apocalyptic number.

It is an amenable number.

56121996 is an abundant number, since it is smaller than the sum of its proper divisors (93979508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56121996 is a wasteful number, since it uses less digits than its factorization.

56121996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1988 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 56121996 is about 7491.4615396463. The cubic root of 56121996 is about 382.8638564258.

The spelling of 56121996 in words is "fifty-six million, one hundred twenty-one thousand, nine hundred ninety-six".