55210055 has 16 divisors (see below), whose sum is σ = 68796000. Its totient is φ = 42483840.

The previous prime is 55210021. The next prime is 55210061. The reversal of 55210055 is 55001255.

It is not a de Polignac number, because 55210055 - 2¹² = 55205959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55210055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50060 + ... + 51150.

It is an arithmetic number, because the mean of its divisors is an integer number (4299750).

Almost surely, 2^55210055 is an apocalyptic number.

55210055 is a deficient number, since it is larger than the sum of its proper divisors (13585945).

55210055 is a wasteful number, since it uses less digits than its factorization.

55210055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 55210055 is about 7430.3468963434. The cubic root of 55210055 is about 380.7787699388.

The spelling of 55210055 in words is "fifty-five million, two hundred ten thousand, fifty-five".