163565061 has 16 divisors (see below), whose sum is σ = 238130688. Its totient is φ = 99039600.

The previous prime is 163565047. The next prime is 163565063. The reversal of 163565061 is 160565361.

It is not a de Polignac number, because 163565061 - 2⁹ = 163564549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163565063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59070 + ... + 61776.

It is an arithmetic number, because the mean of its divisors is an integer number (14883168).

Almost surely, 2^163565061 is an apocalyptic number.

163565061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163565061 is a deficient number, since it is larger than the sum of its proper divisors (74565627).

163565061 is a wasteful number, since it uses less digits than its factorization.

163565061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 163565061 is about 12789.2556859264. The cubic root of 163565061 is about 546.8860514382.

The spelling of 163565061 in words is "one hundred sixty-three million, five hundred sixty-five thousand, sixty-one".