80533915 has 16 divisors (see below), whose sum is σ = 120487680. Its totient is φ = 50202720.

The previous prime is 80533909. The next prime is 80533927. The reversal of 80533915 is 51933508.

It is not a de Polignac number, because 80533915 - 2²¹ = 78436763 is a prime.

It is a super-2 number, since 2×80533915² = 12971422930454450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104205 + ... + 104974.

It is an arithmetic number, because the mean of its divisors is an integer number (7530480).

Almost surely, 2^80533915 is an apocalyptic number.

80533915 is a deficient number, since it is larger than the sum of its proper divisors (39953765).

80533915 is a wasteful number, since it uses less digits than its factorization.

80533915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209202.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 80533915 is about 8974.0690324958. The cubic root of 80533915 is about 431.8433842287.

The spelling of 80533915 in words is "eighty million, five hundred thirty-three thousand, nine hundred fifteen".