55324242 has 16 divisors (see below), whose sum is σ = 122942880. Its totient is φ = 18441396.

The previous prime is 55324207. The next prime is 55324271. The reversal of 55324242 is 24242355.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512208 + ... + 512315.

It is an arithmetic number, because the mean of its divisors is an integer number (7683930).

Almost surely, 2^55324242 is an apocalyptic number.

55324242 is an abundant number, since it is smaller than the sum of its proper divisors (67618638).

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

55324242 is a wasteful number, since it uses less digits than its factorization.

55324242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024534 (or 1024528 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 55324242 is about 7438.0267544558. The cubic root of 55324242 is about 381.0411016481.

Adding to 55324242 its reverse (24242355), we get a palindrome (79566597).

The spelling of 55324242 in words is "fifty-five million, three hundred twenty-four thousand, two hundred forty-two".