55422444 has 48 divisors (see below), whose sum is σ = 161231616. Its totient is φ = 14395200.

The previous prime is 55422443. The next prime is 55422491. The reversal of 55422444 is 44422455.

It is not an unprimeable number, because it can be changed into a prime (55422443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29067 + ... + 30914.

It is an arithmetic number, because the mean of its divisors is an integer number (3358992).

Almost surely, 2^55422444 is an apocalyptic number.

It is an amenable number.

55422444 is an abundant number, since it is smaller than the sum of its proper divisors (105809172).

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

55422444 is a wasteful number, since it uses less digits than its factorization.

55422444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60006 (or 60004 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 55422444 is about 7444.6251752523. The cubic root of 55422444 is about 381.2664210790.

Adding to 55422444 its reverse (44422455), we get a palindrome (99844899).

The spelling of 55422444 in words is "fifty-five million, four hundred twenty-two thousand, four hundred forty-four".