56121560 has 32 divisors (see below), whose sum is σ = 137754000. Its totient is φ = 20407680.

The previous prime is 56121553. The next prime is 56121577. The reversal of 56121560 is 6512165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63335 + ... + 64214.

Almost surely, 2^56121560 is an apocalyptic number.

It is an amenable number.

56121560 is an abundant number, since it is smaller than the sum of its proper divisors (81632440).

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

56121560 is a wasteful number, since it uses less digits than its factorization.

56121560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127571 (or 127567 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 56121560 is about 7491.4324397941. The cubic root of 56121560 is about 382.8628649603.

The spelling of 56121560 in words is "fifty-six million, one hundred twenty-one thousand, five hundred sixty".