55403305620 has 96 divisors (see below), whose sum is σ = 168540970752. Its totient is φ = 13517027328.

The previous prime is 55403305597. The next prime is 55403305637. The reversal of 55403305620 is 2650330455.

55403305620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226152 + ... + 402431.

It is an arithmetic number, because the mean of its divisors is an integer number (1755635112).

Almost surely, 2^55403305620 is an apocalyptic number.

It is an amenable number.

55403305620 is an abundant number, since it is smaller than the sum of its proper divisors (113137665132).

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

55403305620 is a wasteful number, since it uses less digits than its factorization.

55403305620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628721 (or 628719 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 55403305620 in words is "fifty-five billion, four hundred three million, three hundred five thousand, six hundred twenty".