54155520220 has 12 divisors (see below), whose sum is σ = 113726592504. Its totient is φ = 21662208080.

The previous prime is 54155520187. The next prime is 54155520239. The reversal of 54155520220 is 2202555145.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353887986 + ... + 1353888025.

It is an arithmetic number, because the mean of its divisors is an integer number (9477216042).

Almost surely, 2^54155520220 is an apocalyptic number.

It is an amenable number.

54155520220 is an abundant number, since it is smaller than the sum of its proper divisors (59571072284).

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

54155520220 is a wasteful number, since it uses less digits than its factorization.

54155520220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707776020 (or 2707776018 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 54155520220 in words is "fifty-four billion, one hundred fifty-five million, five hundred twenty thousand, two hundred twenty".