1253281 has 4 divisors (see below), whose sum is σ = 1255600. Its totient is φ = 1250964.

The previous prime is 1253279. The next prime is 1253323. The reversal of 1253281 is 1823521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1253281 - 2¹ = 1253279 is a prime.

It is a super-2 number, since 2×1253281² = 3141426529922, which contains 22 as substring.

It is the 1120-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253251) by changing a digit.

It is a nontrivial repunit in base 1119.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (313900).

2^1253281 is an apocalyptic number.

It is an amenable number.

1253281 is a deficient number, since it is larger than the sum of its proper divisors (2319).

1253281 is an equidigital number, since it uses as much as digits as its factorization.

1253281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318.

The product of its digits is 480, while the sum is 22.

The square root of 1253281 is about 1119.5003349709. The cubic root of 1253281 is about 107.8159014960.

The spelling of 1253281 in words is "one million, two hundred fifty-three thousand, two hundred eighty-one".