55720888055 has 16 divisors (see below), whose sum is σ = 76903959360. Its totient is φ = 37965238272.

The previous prime is 55720888051. The next prime is 55720888103. The reversal of 55720888055 is 55088802755.

It is a cyclic number.

It is not a de Polignac number, because 55720888055 - 2² = 55720888051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55720887988 and 55720888006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55720888051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5064650 + ... + 5075639.

It is an arithmetic number, because the mean of its divisors is an integer number (4806497460).

Almost surely, 2^55720888055 is an apocalyptic number.

55720888055 is a deficient number, since it is larger than the sum of its proper divisors (21183071305).

55720888055 is a wasteful number, since it uses less digits than its factorization.

55720888055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140458.

The product of its (nonzero) digits is 4480000, while the sum is 53.

The spelling of 55720888055 in words is "fifty-five billion, seven hundred twenty million, eight hundred eighty-eight thousand, fifty-five".