55220920038 has 48 divisors (see below), whose sum is σ = 127680883200. Its totient is φ = 17187787008.

The previous prime is 55220920037. The next prime is 55220920043. The reversal of 55220920038 is 83002902255.

It is a junction number, because it is equal to n+sod(n) for n = 55220919984 and 55220920011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55220920037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 671613 + ... + 749336.

It is an arithmetic number, because the mean of its divisors is an integer number (2660018400).

Almost surely, 2^55220920038 is an apocalyptic number.

55220920038 is an abundant number, since it is smaller than the sum of its proper divisors (72459963162).

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

55220920038 is a wasteful number, since it uses less digits than its factorization.

55220920038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421101 (or 1421098 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 55220920038 in words is "fifty-five billion, two hundred twenty million, nine hundred twenty thousand, thirty-eight".