55222255 has 16 divisors (see below), whose sum is σ = 73014048. Its totient is φ = 39760000.

The previous prime is 55222247. The next prime is 55222291.

55222255 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55222255 - 2³ = 55222247 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

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, 585 + ... + 10525.

It is an arithmetic number, because the mean of its divisors is an integer number (4563378).

Almost surely, 2^55222255 is an apocalyptic number.

55222255 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55222255 is a deficient number, since it is larger than the sum of its proper divisors (17791793).

55222255 is a wasteful number, since it uses less digits than its factorization.

55222255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10058.

The product of its digits is 10000, while the sum is 28.

The square root of 55222255 is about 7431.1678086287. The cubic root of 55222255 is about 380.8068153064.

It can be divided in two parts, 5522 and 2255, that added together give a palindrome (7777).

The spelling of 55222255 in words is "fifty-five million, two hundred twenty-two thousand, two hundred fifty-five".