80959515 has 96 divisors (see below), whose sum is σ = 167388480. Its totient is φ = 33094656.

The previous prime is 80959499. The next prime is 80959519. The reversal of 80959515 is 51595908.

It is a happy number.

It is not a de Polignac number, because 80959515 - 2⁴ = 80959499 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (80959519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 353421 + ... + 353649.

It is an arithmetic number, because the mean of its divisors is an integer number (1743630).

Almost surely, 2^80959515 is an apocalyptic number.

80959515 is an abundant number, since it is smaller than the sum of its proper divisors (86428965).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80959515 is a wasteful number, since it uses less digits than its factorization.

80959515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 42.

The square root of 80959515 is about 8997.7505522214. The cubic root of 80959515 is about 432.6027733089.

The spelling of 80959515 in words is "eighty million, nine hundred fifty-nine thousand, five hundred fifteen".