55112620 has 24 divisors (see below), whose sum is σ = 115931088. Its totient is φ = 22008000.

The previous prime is 55112611. The next prime is 55112639. The reversal of 55112620 is 2621155.

It is a junction number, because it is equal to n+sod(n) for n = 55112591 and 55112600.

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, 12055 + ... + 15985.

It is an arithmetic number, because the mean of its divisors is an integer number (4830462).

Almost surely, 2^55112620 is an apocalyptic number.

It is an amenable number.

55112620 is an abundant number, since it is smaller than the sum of its proper divisors (60818468).

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

55112620 is a wasteful number, since it uses less digits than its factorization.

55112620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4639 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 55112620 is about 7423.7874430778. The cubic root of 55112620 is about 380.5546379015.

Adding to 55112620 its reverse (2621155), we get a palindrome (57733775).

The spelling of 55112620 in words is "fifty-five million, one hundred twelve thousand, six hundred twenty".