80485281 has 18 divisors (see below), whose sum is σ = 117681590. Its totient is φ = 53006976.

The previous prime is 80485277. The next prime is 80485283. The reversal of 80485281 is 18258408.

It can be written as a sum of positive squares in 3 ways, for example, as 2692881 + 77792400 = 1641^2 + 8820^2 .

It is not a de Polignac number, because 80485281 - 2² = 80485277 is a prime.

It is a super-2 number, since 2×80485281² = 12955760915297922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80485283) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70725 + ... + 71853.

Almost surely, 2^80485281 is an apocalyptic number.

It is an amenable number.

80485281 is a deficient number, since it is larger than the sum of its proper divisors (37196309).

80485281 is a wasteful number, since it uses less digits than its factorization.

80485281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 80485281 is about 8971.3589271637. The cubic root of 80485281 is about 431.7564374218.

The spelling of 80485281 in words is "eighty million, four hundred eighty-five thousand, two hundred eighty-one".