55222051 has 4 divisors (see below), whose sum is σ = 55364400. Its totient is φ = 55079704.

The previous prime is 55222043. The next prime is 55222109. The reversal of 55222051 is 15022255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55222051 - 2³ = 55222043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55226051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70591 + ... + 71368.

It is an arithmetic number, because the mean of its divisors is an integer number (13841100).

Almost surely, 2^55222051 is an apocalyptic number.

55222051 is a deficient number, since it is larger than the sum of its proper divisors (142349).

55222051 is a wasteful number, since it uses less digits than its factorization.

55222051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142348.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 55222051 is about 7431.1540826442. The cubic root of 55222051 is about 380.8063463850.

The spelling of 55222051 in words is "fifty-five million, two hundred twenty-two thousand, fifty-one".