55305612 has 48 divisors (see below), whose sum is σ = 148019200. Its totient is φ = 17839440.

The previous prime is 55305587. The next prime is 55305647. The reversal of 55305612 is 21650355.

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 15 ways as a sum of consecutive naturals, for example, 4912 + ... + 11607.

Almost surely, 2^55305612 is an apocalyptic number.

It is an amenable number.

55305612 is an abundant number, since it is smaller than the sum of its proper divisors (92713588).

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

55305612 is a wasteful number, since it uses less digits than its factorization.

55305612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16563 (or 16555 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55305612 is about 7436.7743007301. The cubic root of 55305612 is about 380.9983259893.

Adding to 55305612 its reverse (21650355), we get a palindrome (76955967).

The spelling of 55305612 in words is "fifty-five million, three hundred five thousand, six hundred twelve".