80909056 has 18 divisors (see below), whose sum is σ = 161502572. Its totient is φ = 40454400.

The previous prime is 80909051. The next prime is 80909063. The reversal of 80909056 is 65090908.

It is a super-2 number, since 2×80909056² = 13092550685622272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80909051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157770 + ... + 158281.

Almost surely, 2^80909056 is an apocalyptic number.

It is an amenable number.

80909056 is a deficient number, since it is larger than the sum of its proper divisors (80593516).

80909056 is an equidigital number, since it uses as much as digits as its factorization.

80909056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316067 (or 316053 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 80909056 is about 8994.9461365814. The cubic root of 80909056 is about 432.5128796548.

The spelling of 80909056 in words is "eighty million, nine hundred nine thousand, fifty-six".