161529897 has 16 divisors (see below), whose sum is σ = 225636480. Its totient is φ = 102592512.

The previous prime is 161529883. The next prime is 161529911. The reversal of 161529897 is 798925161.

It is an interprime number because it is at equal distance from previous prime (161529883) and next prime (161529911).

It is not a de Polignac number, because 161529897 - 2⁶ = 161529833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161529847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13179 + ... + 22287.

It is an arithmetic number, because the mean of its divisors is an integer number (14102280).

Almost surely, 2^161529897 is an apocalyptic number.

It is an amenable number.

161529897 is a deficient number, since it is larger than the sum of its proper divisors (64106583).

161529897 is a wasteful number, since it uses less digits than its factorization.

161529897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9392.

The product of its digits is 272160, while the sum is 48.

The square root of 161529897 is about 12709.4412544376. The cubic root of 161529897 is about 544.6083621282.

The spelling of 161529897 in words is "one hundred sixty-one million, five hundred twenty-nine thousand, eight hundred ninety-seven".