55244442 has 32 divisors (see below), whose sum is σ = 121135104. Its totient is φ = 16657200.

The previous prime is 55244437. The next prime is 55244447. The reversal of 55244442 is 24444255.

It is an interprime number because it is at equal distance from previous prime (55244437) and next prime (55244447).

It is not an unprimeable number, because it can be changed into a prime (55244447) 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, 11943 + ... + 15909.

It is an arithmetic number, because the mean of its divisors is an integer number (3785472).

Almost surely, 2^55244442 is an apocalyptic number.

55244442 is an abundant number, since it is smaller than the sum of its proper divisors (65890662).

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

55244442 is a wasteful number, since it uses less digits than its factorization.

55244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194.

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

The square root of 55244442 is about 7432.6604927173. The cubic root of 55244442 is about 380.8578082109.

Adding to 55244442 its reverse (24444255), we get a palindrome (79688697).

The spelling of 55244442 in words is "fifty-five million, two hundred forty-four thousand, four hundred forty-two".