55315242 has 12 divisors (see below), whose sum is σ = 119849730. Its totient is φ = 18438408.

The previous prime is 55315237. The next prime is 55315279. The reversal of 55315242 is 24251355.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55219761 + 95481 = 7431^2 + 309^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1536517 + ... + 1536552.

Almost surely, 2^55315242 is an apocalyptic number.

55315242 is an abundant number, since it is smaller than the sum of its proper divisors (64534488).

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

55315242 is a wasteful number, since it uses less digits than its factorization.

55315242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073077 (or 3073074 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55315242 is about 7437.4217306806. The cubic root of 55315242 is about 381.0204382778.

Adding to 55315242 its reverse (24251355), we get a palindrome (79566597).

The spelling of 55315242 in words is "fifty-five million, three hundred fifteen thousand, two hundred forty-two".