55405220355 has 48 divisors (see below), whose sum is σ = 96546419424. Its totient is φ = 29392650240.

The previous prime is 55405220323. The next prime is 55405220359. The reversal of 55405220355 is 55302250455.

55405220355 is a `hidden beast` number, since 554 + 0 + 52 + 2 + 0 + 3 + 55 = 666.

It is not a de Polignac number, because 55405220355 - 2⁵ = 55405220323 is a prime.

It is a super-2 number, since 2×55405220355² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55405220359) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9214300 + ... + 9220310.

It is an arithmetic number, because the mean of its divisors is an integer number (2011383738).

Almost surely, 2^55405220355 is an apocalyptic number.

55405220355 is a deficient number, since it is larger than the sum of its proper divisors (41141199069).

55405220355 is a wasteful number, since it uses less digits than its factorization.

55405220355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7076 (or 7073 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 36.

The spelling of 55405220355 in words is "fifty-five billion, four hundred five million, two hundred twenty thousand, three hundred fifty-five".