55520767520 has 48 divisors (see below), whose sum is σ = 134218244160. Its totient is φ = 21691832064.

The previous prime is 55520767493. The next prime is 55520767529. The reversal of 55520767520 is 2576702555.

55520767520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55520767529) 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, 4028060 + ... + 4041819.

It is an arithmetic number, because the mean of its divisors is an integer number (2796213420).

Almost surely, 2^55520767520 is an apocalyptic number.

It is an amenable number.

55520767520 is an abundant number, since it is smaller than the sum of its proper divisors (78697476640).

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

55520767520 is a wasteful number, since it uses less digits than its factorization.

55520767520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8069937 (or 8069929 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 44.

The spelling of 55520767520 in words is "fifty-five billion, five hundred twenty million, seven hundred sixty-seven thousand, five hundred twenty".