1253489 has 4 divisors (see below), whose sum is σ = 1274100. Its totient is φ = 1232880.

The previous prime is 1253479. The next prime is 1253513. The reversal of 1253489 is 9843521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 652864 + 600625 = 808^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253489 - 2²⁰ = 204913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1253479) 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, 10214 + ... + 10335.

It is an arithmetic number, because the mean of its divisors is an integer number (318525).

2^1253489 is an apocalyptic number.

It is an amenable number.

1253489 is a deficient number, since it is larger than the sum of its proper divisors (20611).

1253489 is an equidigital number, since it uses as much as digits as its factorization.

1253489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20610.

The product of its digits is 8640, while the sum is 32.

The square root of 1253489 is about 1119.5932297044. The cubic root of 1253489 is about 107.8218656990.

Adding to 1253489 its sum of digits (32), we get a palindrome (1253521).

The spelling of 1253489 in words is "one million, two hundred fifty-three thousand, four hundred eighty-nine".