161072575 has 12 divisors (see below), whose sum is σ = 199910320. Its totient is φ = 128741760.

The previous prime is 161072551. The next prime is 161072579. The reversal of 161072575 is 575270161.

It is a happy number.

It is not a de Polignac number, because 161072575 - 2⁵ = 161072543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161072575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161072579) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 35062 + ... + 39388.

Almost surely, 2^161072575 is an apocalyptic number.

161072575 is a deficient number, since it is larger than the sum of its proper divisors (38837745).

161072575 is a wasteful number, since it uses less digits than its factorization.

161072575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826 (or 5821 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 161072575 is about 12691.4370738699. The cubic root of 161072575 is about 544.0939128793.

The spelling of 161072575 in words is "one hundred sixty-one million, seventy-two thousand, five hundred seventy-five".