161477575 has 12 divisors (see below), whose sum is σ = 228837040. Its totient is φ = 110727360.

The previous prime is 161477567. The next prime is 161477623. The reversal of 161477575 is 575774161.

It is not a de Polignac number, because 161477575 - 2³ = 161477567 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 461190 + ... + 461539.

Almost surely, 2^161477575 is an apocalyptic number.

161477575 is a deficient number, since it is larger than the sum of its proper divisors (67359465).

161477575 is an equidigital number, since it uses as much as digits as its factorization.

161477575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922746 (or 922741 counting only the distinct ones).

The product of its digits is 205800, while the sum is 43.

The square root of 161477575 is about 12707.3826966846. The cubic root of 161477575 is about 544.5495534568.

The spelling of 161477575 in words is "one hundred sixty-one million, four hundred seventy-seven thousand, five hundred seventy-five".