55091612 has 6 divisors (see below), whose sum is σ = 96410328. Its totient is φ = 27545804.

The previous prime is 55091609. The next prime is 55091633. The reversal of 55091612 is 21619055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6886448 + ... + 6886455.

It is an arithmetic number, because the mean of its divisors is an integer number (16068388).

Almost surely, 2^55091612 is an apocalyptic number.

It is an amenable number.

55091612 is a deficient number, since it is larger than the sum of its proper divisors (41318716).

55091612 is a wasteful number, since it uses less digits than its factorization.

55091612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13772907 (or 13772905 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 55091612 is about 7422.3723970170. The cubic root of 55091612 is about 380.5062780893.

The spelling of 55091612 in words is "fifty-five million, ninety-one thousand, six hundred twelve".