160995521 has 4 divisors (see below), whose sum is σ = 161112000. Its totient is φ = 160879044.

The previous prime is 160995511. The next prime is 160995529. The reversal of 160995521 is 125599061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160995521 is a prime.

It is a super-2 number, since 2×160995521² = 51839115564122882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160995529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56141 + ... + 58938.

It is an arithmetic number, because the mean of its divisors is an integer number (40278000).

Almost surely, 2^160995521 is an apocalyptic number.

It is an amenable number.

160995521 is a deficient number, since it is larger than the sum of its proper divisors (116479).

160995521 is a wasteful number, since it uses less digits than its factorization.

160995521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116478.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 160995521 is about 12688.4010418965. The cubic root of 160995521 is about 544.0071377109.

The spelling of 160995521 in words is "one hundred sixty million, nine hundred ninety-five thousand, five hundred twenty-one".