55827816 has 32 divisors (see below), whose sum is σ = 152258400. Its totient is φ = 16917440.

The previous prime is 55827781. The next prime is 55827823. The reversal of 55827816 is 61872855.

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, 105471 + ... + 105998.

It is an arithmetic number, because the mean of its divisors is an integer number (4758075).

Almost surely, 2^55827816 is an apocalyptic number.

It is an amenable number.

55827816 is an abundant number, since it is smaller than the sum of its proper divisors (96430584).

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

55827816 is a wasteful number, since it uses less digits than its factorization.

55827816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211489 (or 211485 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 55827816 is about 7471.8013892234. The cubic root of 55827816 is about 382.1937195309.

The spelling of 55827816 in words is "fifty-five million, eight hundred twenty-seven thousand, eight hundred sixteen".