80815275 has 36 divisors (see below), whose sum is σ = 148133128. Its totient is φ = 42094080.

The previous prime is 80815271. The next prime is 80815337. The reversal of 80815275 is 57251808.

It is not a de Polignac number, because 80815275 - 2² = 80815271 is a prime.

It is a super-2 number, since 2×80815275² = 13062217346651250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80815271) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5499 + ... + 13851.

Almost surely, 2^80815275 is an apocalyptic number.

80815275 is a deficient number, since it is larger than the sum of its proper divisors (67317853).

80815275 is a wasteful number, since it uses less digits than its factorization.

80815275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 80815275 is about 8989.7316422683. The cubic root of 80815275 is about 432.3457077131.

The spelling of 80815275 in words is "eighty million, eight hundred fifteen thousand, two hundred seventy-five".