161082515 has 16 divisors (see below), whose sum is σ = 215778816. Its totient is φ = 114424800.

The previous prime is 161082511. The next prime is 161082521. The reversal of 161082515 is 515280161.

It is not a de Polignac number, because 161082515 - 2² = 161082511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161082511) 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, 31691 + ... + 36420.

It is an arithmetic number, because the mean of its divisors is an integer number (13486176).

Almost surely, 2^161082515 is an apocalyptic number.

161082515 is a deficient number, since it is larger than the sum of its proper divisors (54696301).

161082515 is a wasteful number, since it uses less digits than its factorization.

161082515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68170.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 161082515 is about 12691.8286704478. The cubic root of 161082515 is about 544.1051048989.

The spelling of 161082515 in words is "one hundred sixty-one million, eighty-two thousand, five hundred fifteen".