253361 has 2 divisors, whose sum is σ = 253362. Its totient is φ = 253360.

The previous prime is 253349. The next prime is 253367. The reversal of 253361 is 163352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185761 + 67600 = 431^2 + 260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253361 is a prime.

It is not a weakly prime, because it can be changed into another prime (253367) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126680 + 126681.

It is an arithmetic number, because the mean of its divisors is an integer number (126681).

2²⁵³³⁶¹ is an apocalyptic number.

It is an amenable number.

253361 is a deficient number, since it is larger than the sum of its proper divisors (1).

253361 is an equidigital number, since it uses as much as digits as its factorization.

253361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 20.

The square root of 253361 is about 503.3497789808. The cubic root of 253361 is about 63.2771030611.

Subtracting from 253361 its reverse (163352), we obtain a palindrome (90009).

The spelling of 253361 in words is "two hundred fifty-three thousand, three hundred sixty-one".