55222404 has 24 divisors (see below), whose sum is σ = 129275328. Its totient is φ = 18347040.

The previous prime is 55222403. The next prime is 55222421. The reversal of 55222404 is 40422255.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55222403) 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, 3667 + ... + 11130.

It is an arithmetic number, because the mean of its divisors is an integer number (5386472).

Almost surely, 2^55222404 is an apocalyptic number.

It is an amenable number.

55222404 is an abundant number, since it is smaller than the sum of its proper divisors (74052924).

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

55222404 is a wasteful number, since it uses less digits than its factorization.

55222404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115 (or 15113 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 55222404 is about 7431.1778339641. The cubic root of 55222404 is about 380.8071578022.

Adding to 55222404 its reverse (40422255), we get a palindrome (95644659).

The spelling of 55222404 in words is "fifty-five million, two hundred twenty-two thousand, four hundred four".