280451 has 2 divisors, whose sum is σ = 280452. Its totient is φ = 280450.

The previous prime is 280411. The next prime is 280463. The reversal of 280451 is 154082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280451 - 2¹⁸ = 18307 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280451.

It is not a weakly prime, because it can be changed into another prime (280411) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140225 + 140226.

It is an arithmetic number, because the mean of its divisors is an integer number (140226).

2²⁸⁰⁴⁵¹ is an apocalyptic number.

280451 is a deficient number, since it is larger than the sum of its proper divisors (1).

280451 is an equidigital number, since it uses as much as digits as its factorization.

280451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 280451 is about 529.5762456908. The cubic root of 280451 is about 65.4564323834.

The spelling of 280451 in words is "two hundred eighty thousand, four hundred fifty-one".