161006515 has 8 divisors (see below), whose sum is σ = 193658688. Its totient is φ = 128504640.

The previous prime is 161006497. The next prime is 161006533. The reversal of 161006515 is 515600161.

161006515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161006497) and next prime (161006533).

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

It is not a de Polignac number, because 161006515 - 2⁷ = 161006387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161006515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35202 + ... + 39511.

It is an arithmetic number, because the mean of its divisors is an integer number (24207336).

Almost surely, 2^161006515 is an apocalyptic number.

161006515 is a deficient number, since it is larger than the sum of its proper divisors (32652173).

161006515 is an equidigital number, since it uses as much as digits as its factorization.

161006515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75149.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 161006515 is about 12688.8342648172. The cubic root of 161006515 is about 544.0195204122.

Adding to 161006515 its reverse (515600161), we get a palindrome (676606676).

The spelling of 161006515 in words is "one hundred sixty-one million, six thousand, five hundred fifteen".