161715227 has 2 divisors, whose sum is σ = 161715228. Its totient is φ = 161715226.

The previous prime is 161715167. The next prime is 161715263. The reversal of 161715227 is 722517161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161715227 - 2⁶ = 161715163 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 161715193 and 161715202.

It is not a weakly prime, because it can be changed into another prime (161715427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80857613 + 80857614.

It is an arithmetic number, because the mean of its divisors is an integer number (80857614).

Almost surely, 2^161715227 is an apocalyptic number.

161715227 is a deficient number, since it is larger than the sum of its proper divisors (1).

161715227 is an equidigital number, since it uses as much as digits as its factorization.

161715227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 32.

The square root of 161715227 is about 12716.7302008024. The cubic root of 161715227 is about 544.8165664977.

The spelling of 161715227 in words is "one hundred sixty-one million, seven hundred fifteen thousand, two hundred twenty-seven".