53550566 has 16 divisors (see below), whose sum is σ = 82857984. Its totient is φ = 25941384.

The previous prime is 53550529. The next prime is 53550577. The reversal of 53550566 is 66505535.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 8471 + ... + 13373.

It is an arithmetic number, because the mean of its divisors is an integer number (5178624).

Almost surely, 2^53550566 is an apocalyptic number.

53550566 is a deficient number, since it is larger than the sum of its proper divisors (29307418).

53550566 is a wasteful number, since it uses less digits than its factorization.

53550566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 67500, while the sum is 35.

The square root of 53550566 is about 7317.8252233843. The cubic root of 53550566 is about 376.9247786657.

The spelling of 53550566 in words is "fifty-three million, five hundred fifty thousand, five hundred sixty-six".