161546223 has 8 divisors (see below), whose sum is σ = 228065328. Its totient is φ = 101362304.

The previous prime is 161546221. The next prime is 161546237. The reversal of 161546223 is 322645161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161546223 - 2¹ = 161546221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161546221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583736 + ... + 1583837.

It is an arithmetic number, because the mean of its divisors is an integer number (28508166).

Almost surely, 2^161546223 is an apocalyptic number.

161546223 is a deficient number, since it is larger than the sum of its proper divisors (66519105).

161546223 is a wasteful number, since it uses less digits than its factorization.

161546223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167593.

The product of its digits is 8640, while the sum is 30.

The square root of 161546223 is about 12710.0835166414. The cubic root of 161546223 is about 544.6267095606.

The spelling of 161546223 in words is "one hundred sixty-one million, five hundred forty-six thousand, two hundred twenty-three".