55112340 has 24 divisors (see below), whose sum is σ = 154314720. Its totient is φ = 14696608.

The previous prime is 55112311. The next prime is 55112359. The reversal of 55112340 is 4321155.

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, 459210 + ... + 459329.

It is an arithmetic number, because the mean of its divisors is an integer number (6429780).

Almost surely, 2^55112340 is an apocalyptic number.

It is an amenable number.

55112340 is an abundant number, since it is smaller than the sum of its proper divisors (99202380).

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

55112340 is a wasteful number, since it uses less digits than its factorization.

55112340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918551 (or 918549 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55112340 is about 7423.7685847553. The cubic root of 55112340 is about 380.5539934304.

Adding to 55112340 its reverse (4321155), we get a palindrome (59433495).

The spelling of 55112340 in words is "fifty-five million, one hundred twelve thousand, three hundred forty".