161446475 has 6 divisors (see below), whose sum is σ = 200193660. Its totient is φ = 129157160.

The previous prime is 161446469. The next prime is 161446487. The reversal of 161446475 is 574644161.

It is not a de Polignac number, because 161446475 - 2⁴ = 161446459 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3228905 + ... + 3228954.

It is an arithmetic number, because the mean of its divisors is an integer number (33365610).

Almost surely, 2^161446475 is an apocalyptic number.

161446475 is a deficient number, since it is larger than the sum of its proper divisors (38747185).

161446475 is an equidigital number, since it uses as much as digits as its factorization.

161446475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6457869 (or 6457864 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 161446475 is about 12706.1589396639. The cubic root of 161446475 is about 544.5145917839.

The spelling of 161446475 in words is "one hundred sixty-one million, four hundred forty-six thousand, four hundred seventy-five".