253489 has 4 divisors (see below), whose sum is σ = 262260. Its totient is φ = 244720.

The previous prime is 253481. The next prime is 253493. The reversal of 253489 is 984352.

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 87025 + 166464 = 295^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 253489 - 2³ = 253481 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253489.

It is not an unprimeable number, because it can be changed into a prime (253481) by changing a digit.

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, 4342 + ... + 4399.

It is an arithmetic number, because the mean of its divisors is an integer number (65565).

2²⁵³⁴⁸⁹ is an apocalyptic number.

253489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

253489 is a deficient number, since it is larger than the sum of its proper divisors (8771).

253489 is an equidigital number, since it uses as much as digits as its factorization.

253489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770.

The product of its digits is 8640, while the sum is 31.

The square root of 253489 is about 503.4769110893. The cubic root of 253489 is about 63.2877572996.

The spelling of 253489 in words is "two hundred fifty-three thousand, four hundred eighty-nine".