55837986 has 16 divisors (see below), whose sum is σ = 112166400. Its totient is φ = 18530928.

The previous prime is 55837981. The next prime is 55837987. The reversal of 55837986 is 68973855.

It is a super-3 number, since 3×55837986³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55837981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18946 + ... + 21693.

It is an arithmetic number, because the mean of its divisors is an integer number (7010400).

Almost surely, 2^55837986 is an apocalyptic number.

55837986 is an abundant number, since it is smaller than the sum of its proper divisors (56328414).

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

55837986 is a wasteful number, since it uses less digits than its factorization.

55837986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40873.

The product of its digits is 1814400, while the sum is 51.

The square root of 55837986 is about 7472.4819170072. The cubic root of 55837986 is about 382.2169258488.

The spelling of 55837986 in words is "fifty-five million, eight hundred thirty-seven thousand, nine hundred eighty-six".