181253 has 2 divisors, whose sum is σ = 181254. Its totient is φ = 181252.

The previous prime is 181243. The next prime is 181273. The reversal of 181253 is 352181.

It is an a-pointer prime, because the next prime (181273) can be obtained adding 181253 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124609 + 56644 = 353^2 + 238^2 .

It is an emirp because it is prime and its reverse (352181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181253 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 181253.

It is not a weakly prime, because it can be changed into another prime (181213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90626 + 90627.

It is an arithmetic number, because the mean of its divisors is an integer number (90627).

2¹⁸¹²⁵³ is an apocalyptic number.

It is an amenable number.

181253 is a deficient number, since it is larger than the sum of its proper divisors (1).

181253 is an equidigital number, since it uses as much as digits as its factorization.

181253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 181253 is about 425.7381824549. The cubic root of 181253 is about 56.5928720312.

It can be divided in two parts, 181 and 253, that added together give a palindrome (434).

The spelling of 181253 in words is "one hundred eighty-one thousand, two hundred fifty-three".