163255566 has 16 divisors (see below), whose sum is σ = 326667600. Its totient is φ = 54392448.

The previous prime is 163255501. The next prime is 163255577. The reversal of 163255566 is 665552361.

163255566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 10440 + ... + 20868.

It is an arithmetic number, because the mean of its divisors is an integer number (20416725).

Almost surely, 2^163255566 is an apocalyptic number.

163255566 is an abundant number, since it is smaller than the sum of its proper divisors (163412034).

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

163255566 is a wasteful number, since it uses less digits than its factorization.

163255566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13043.

The product of its digits is 162000, while the sum is 39.

The square root of 163255566 is about 12777.1501517357. The cubic root of 163255566 is about 546.5408975163.

The spelling of 163255566 in words is "one hundred sixty-three million, two hundred fifty-five thousand, five hundred sixty-six".