56155051220 has 48 divisors (see below), whose sum is σ = 118356591360. Its totient is φ = 22380074496.

The previous prime is 56155051201. The next prime is 56155051237. The reversal of 56155051220 is 2215055165.

It is a congruent number.

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, 7123241 + ... + 7131119.

It is an arithmetic number, because the mean of its divisors is an integer number (2465762320).

Almost surely, 2^56155051220 is an apocalyptic number.

It is an amenable number.

56155051220 is an abundant number, since it is smaller than the sum of its proper divisors (62201540140).

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

56155051220 is a wasteful number, since it uses less digits than its factorization.

56155051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9144 (or 9142 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 56155051220 in words is "fifty-six billion, one hundred fifty-five million, fifty-one thousand, two hundred twenty".