56121808 has 40 divisors (see below), whose sum is σ = 111421440. Its totient is φ = 27377280.

The previous prime is 56121799. The next prime is 56121809. The reversal of 56121808 is 80812165.

It is a self number, because there is not a number n which added to its sum of digits gives 56121808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121809) 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, 144078 + ... + 144466.

It is an arithmetic number, because the mean of its divisors is an integer number (2785536).

Almost surely, 2^56121808 is an apocalyptic number.

It is an amenable number.

56121808 is a deficient number, since it is larger than the sum of its proper divisors (55299632).

56121808 is a wasteful number, since it uses less digits than its factorization.

56121808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 56121808 is about 7491.4489920175. The cubic root of 56121808 is about 382.8634289138.

The spelling of 56121808 in words is "fifty-six million, one hundred twenty-one thousand, eight hundred eight".