161170227 has 12 divisors (see below), whose sum is σ = 233829960. Its totient is φ = 106972128.

The previous prime is 161170201. The next prime is 161170249. The reversal of 161170227 is 722071161.

161170227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161170227 - 2⁷ = 161170099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161170227.

It is not an unprimeable number, because it can be changed into a prime (161170277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37402 + ... + 41487.

It is an arithmetic number, because the mean of its divisors is an integer number (19485830).

Almost surely, 2^161170227 is an apocalyptic number.

161170227 is a deficient number, since it is larger than the sum of its proper divisors (72659733).

161170227 is a wasteful number, since it uses less digits than its factorization.

161170227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79122 (or 79119 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 161170227 is about 12695.2836518134. The cubic root of 161170227 is about 544.2038449501.

The spelling of 161170227 in words is "one hundred sixty-one million, one hundred seventy thousand, two hundred twenty-seven".