55515342 has 16 divisors (see below), whose sum is σ = 112913280. Its totient is φ = 18191352.

The previous prime is 55515293. The next prime is 55515373. The reversal of 55515342 is 24351555.

It is a happy number.

It is a congruent number.

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, 78058 + ... + 78765.

It is an arithmetic number, because the mean of its divisors is an integer number (7057080).

Almost surely, 2^55515342 is an apocalyptic number.

55515342 is an abundant number, since it is smaller than the sum of its proper divisors (57397938).

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

55515342 is a wasteful number, since it uses less digits than its factorization.

55515342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156887.

The product of its digits is 15000, while the sum is 30.

The square root of 55515342 is about 7450.8618293456. The cubic root of 55515342 is about 381.4793259021.

Adding to 55515342 its reverse (24351555), we get a palindrome (79866897).

The spelling of 55515342 in words is "fifty-five million, five hundred fifteen thousand, three hundred forty-two".