55103566 has 16 divisors (see below), whose sum is σ = 95439456. Its totient is φ = 23371776.

The previous prime is 55103551. The next prime is 55103621. The reversal of 55103566 is 66530155.

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 in 7 ways as a sum of consecutive naturals, for example, 18931 + ... + 21646.

It is an arithmetic number, because the mean of its divisors is an integer number (5964966).

Almost surely, 2^55103566 is an apocalyptic number.

55103566 is a deficient number, since it is larger than the sum of its proper divisors (40335890).

55103566 is a wasteful number, since it uses less digits than its factorization.

55103566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40683.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 55103566 is about 7423.1776214772. The cubic root of 55103566 is about 380.5337973609.

The spelling of 55103566 in words is "fifty-five million, one hundred three thousand, five hundred sixty-six".