55210115 has 8 divisors (see below), whose sum is σ = 66292560. Its totient is φ = 44141152.

The previous prime is 55210091. The next prime is 55210123. The reversal of 55210115 is 51101255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55210115 - 2²⁰ = 54161539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12137 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (8286570).

Almost surely, 2^55210115 is an apocalyptic number.

55210115 is a deficient number, since it is larger than the sum of its proper divisors (11082445).

55210115 is a wasteful number, since it uses less digits than its factorization.

55210115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 55210115 is about 7430.3509338389. The cubic root of 55210115 is about 380.7789078770.

The spelling of 55210115 in words is "fifty-five million, two hundred ten thousand, one hundred fifteen".