55386720555 has 48 divisors (see below), whose sum is σ = 95628051456. Its totient is φ = 27343673280.

The previous prime is 55386720533. The next prime is 55386720581. The reversal of 55386720555 is 55502768355.

55386720555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55386720555 - 2⁶ = 55386720491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55386720498 and 55386720507.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133404 + ... + 358566.

It is an arithmetic number, because the mean of its divisors is an integer number (1992251072).

Almost surely, 2^55386720555 is an apocalyptic number.

55386720555 is a deficient number, since it is larger than the sum of its proper divisors (40241330901).

55386720555 is a wasteful number, since it uses less digits than its factorization.

55386720555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225248 (or 225225 counting only the distinct ones).

The product of its (nonzero) digits is 6300000, while the sum is 51.

The spelling of 55386720555 in words is "fifty-five billion, three hundred eighty-six million, seven hundred twenty thousand, five hundred fifty-five".