55356222 has 16 divisors (see below), whose sum is σ = 113287680. Its totient is φ = 18022872.

The previous prime is 55356211. The next prime is 55356227. The reversal of 55356222 is 22265355.

It is a super-2 number, since 2×55356222² = 6128622628226568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55356222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55356227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107022 + ... + 107537.

It is an arithmetic number, because the mean of its divisors is an integer number (7080480).

Almost surely, 2^55356222 is an apocalyptic number.

55356222 is an abundant number, since it is smaller than the sum of its proper divisors (57931458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55356222 is a wasteful number, since it uses less digits than its factorization.

55356222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214607.

The product of its digits is 18000, while the sum is 30.

The square root of 55356222 is about 7440.1762075908. The cubic root of 55356222 is about 381.1145073667.

The spelling of 55356222 in words is "fifty-five million, three hundred fifty-six thousand, two hundred twenty-two".