55222775 has 12 divisors (see below), whose sum is σ = 69019392. Its totient is φ = 43827840.

The previous prime is 55222733. The next prime is 55222781. The reversal of 55222775 is 57722255.

It is not a de Polignac number, because 55222775 - 2¹² = 55218679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5522 + ... + 11871.

It is an arithmetic number, because the mean of its divisors is an integer number (5751616).

Almost surely, 2^55222775 is an apocalyptic number.

55222775 is a deficient number, since it is larger than the sum of its proper divisors (13796617).

55222775 is a wasteful number, since it uses less digits than its factorization.

55222775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17530 (or 17525 counting only the distinct ones).

The product of its digits is 49000, while the sum is 35.

The square root of 55222775 is about 7431.2027963177. The cubic root of 55222775 is about 380.8080105909.

The spelling of 55222775 in words is "fifty-five million, two hundred twenty-two thousand, seven hundred seventy-five".