55116612 has 60 divisors (see below), whose sum is σ = 146293840. Its totient is φ = 18090864.

The previous prime is 55116563. The next prime is 55116653. The reversal of 55116612 is 21661155.

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 19 ways as a sum of consecutive naturals, for example, 20439 + ... + 22977.

Almost surely, 2^55116612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55116612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73146920).

55116612 is an abundant number, since it is smaller than the sum of its proper divisors (91177228).

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

55116612 is a wasteful number, since it uses less digits than its factorization.

55116612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 2611 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 55116612 is about 7424.0563036658. The cubic root of 55116612 is about 380.5638259812.

Adding to 55116612 its reverse (21661155), we get a palindrome (76777767).

The spelling of 55116612 in words is "fifty-five million, one hundred sixteen thousand, six hundred twelve".