55502222 has 4 divisors (see below), whose sum is σ = 83253336. Its totient is φ = 27751110.

The previous prime is 55502221. The next prime is 55502281. The reversal of 55502222 is 22220555.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55502221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13875554 + ... + 13875557.

It is an arithmetic number, because the mean of its divisors is an integer number (20813334).

Almost surely, 2^55502222 is an apocalyptic number.

55502222 is a deficient number, since it is larger than the sum of its proper divisors (27751114).

55502222 is a wasteful number, since it uses less digits than its factorization.

55502222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27751113.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 55502222 is about 7449.9813422585. The cubic root of 55502222 is about 381.4492717291.

Adding to 55502222 its reverse (22220555), we get a palindrome (77722777).

The spelling of 55502222 in words is "fifty-five million, five hundred two thousand, two hundred twenty-two".