253345 has 8 divisors (see below), whose sum is σ = 317376. Its totient is φ = 193776.

The previous prime is 253343. The next prime is 253349. The reversal of 253345 is 543352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253345 - 2¹ = 253343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253343) 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 7 ways as a sum of consecutive naturals, for example, 987 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (39672).

2²⁵³³⁴⁵ is an apocalyptic number.

It is an amenable number.

253345 is a deficient number, since it is larger than the sum of its proper divisors (64031).

253345 is a wasteful number, since it uses less digits than its factorization.

253345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its digits is 1800, while the sum is 22.

The square root of 253345 is about 503.3338852094. Note that the first 3 decimals coincide. The cubic root of 253345 is about 63.2757710290.

Adding to 253345 its reverse (543352), we get a palindrome (796697).

The spelling of 253345 in words is "two hundred fifty-three thousand, three hundred forty-five".