280496081 has 2 divisors, whose sum is σ = 280496082. Its totient is φ = 280496080.

The previous prime is 280496053. The next prime is 280496119. The reversal of 280496081 is 180694082.

It is an a-pointer prime, because the next prime (280496119) can be obtained adding 280496081 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254689681 + 25806400 = 15959^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 280496081 - 2²⁶ = 213387217 is a prime.

It is a super-2 number, since 2×280496081² = 157356102912717122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (280496681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140248040 + 140248041.

It is an arithmetic number, because the mean of its divisors is an integer number (140248041).

Almost surely, 2^280496081 is an apocalyptic number.

It is an amenable number.

280496081 is a deficient number, since it is larger than the sum of its proper divisors (1).

280496081 is an equidigital number, since it uses as much as digits as its factorization.

280496081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 280496081 is about 16748.0172259286. The cubic root of 280496081 is about 654.5993945277.

The spelling of 280496081 in words is "two hundred eighty million, four hundred ninety-six thousand, eighty-one".