1253491 has 4 divisors (see below), whose sum is σ = 1255752. Its totient is φ = 1251232.

The previous prime is 1253479. The next prime is 1253513. The reversal of 1253491 is 1943521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1253491 - 2¹⁷ = 1122419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (313938).

2^1253491 is an apocalyptic number.

1253491 is a deficient number, since it is larger than the sum of its proper divisors (2261).

1253491 is an equidigital number, since it uses as much as digits as its factorization.

1253491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260.

The product of its digits is 1080, while the sum is 25.

The square root of 1253491 is about 1119.5941228856. The cubic root of 1253491 is about 107.8219230439.

The spelling of 1253491 in words is "one million, two hundred fifty-three thousand, four hundred ninety-one".