160531521 has 8 divisors (see below), whose sum is σ = 216161664. Its totient is φ = 105961200.

The previous prime is 160531499. The next prime is 160531601. The reversal of 160531521 is 125135061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 160531521 - 2⁹ = 160531009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 160531491 and 160531500.

It is not an unprimeable number, because it can be changed into a prime (160531621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264601 + ... + 265206.

It is an arithmetic number, because the mean of its divisors is an integer number (27020208).

Almost surely, 2^160531521 is an apocalyptic number.

It is an amenable number.

160531521 is a deficient number, since it is larger than the sum of its proper divisors (55630143).

160531521 is a wasteful number, since it uses less digits than its factorization.

160531521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529911.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 160531521 is about 12670.1034328848. The cubic root of 160531521 is about 543.4840130180.

Adding to 160531521 its reverse (125135061), we get a palindrome (285666582).

The spelling of 160531521 in words is "one hundred sixty million, five hundred thirty-one thousand, five hundred twenty-one".