55583816 has 16 divisors (see below), whose sum is σ = 109705200. Its totient is φ = 26329104.

The previous prime is 55583791. The next prime is 55583831. The reversal of 55583816 is 61838555.

It is a super-2 number, since 2×55583816² = 6179121202243712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182690 + ... + 182993.

It is an arithmetic number, because the mean of its divisors is an integer number (6856575).

Almost surely, 2^55583816 is an apocalyptic number.

It is an amenable number.

55583816 is a deficient number, since it is larger than the sum of its proper divisors (54121384).

55583816 is a wasteful number, since it uses less digits than its factorization.

55583816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365708 (or 365704 counting only the distinct ones).

The product of its digits is 144000, while the sum is 41.

The square root of 55583816 is about 7455.4554522175. The cubic root of 55583816 is about 381.6361034833.

The spelling of 55583816 in words is "fifty-five million, five hundred eighty-three thousand, eight hundred sixteen".