280253 has 2 divisors, whose sum is σ = 280254. Its totient is φ = 280252.

The previous prime is 280249. The next prime is 280277. The reversal of 280253 is 352082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273529 + 6724 = 523^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 280253 - 2² = 280249 is a prime.

It is equal to p₂₄₄₅₅ and since 280253 and 24455 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280253.

It is not a weakly prime, because it can be changed into another prime (280223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140126 + 140127.

It is an arithmetic number, because the mean of its divisors is an integer number (140127).

2²⁸⁰²⁵³ is an apocalyptic number.

It is an amenable number.

280253 is a deficient number, since it is larger than the sum of its proper divisors (1).

280253 is an equidigital number, since it uses as much as digits as its factorization.

280253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 280253 is about 529.3892707640. The cubic root of 280253 is about 65.4410245524.

The spelling of 280253 in words is "two hundred eighty thousand, two hundred fifty-three".