253173 has 4 divisors (see below), whose sum is σ = 337568. Its totient is φ = 168780.

The previous prime is 253159. The next prime is 253229. The reversal of 253173 is 371352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253173 - 2⁴ = 253157 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

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 253173.

It is not an unprimeable number, because it can be changed into a prime (253103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42193 + ... + 42198.

It is an arithmetic number, because the mean of its divisors is an integer number (84392).

2²⁵³¹⁷³ is an apocalyptic number.

It is an amenable number.

253173 is a deficient number, since it is larger than the sum of its proper divisors (84395).

253173 is an equidigital number, since it uses as much as digits as its factorization.

253173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84394.

The product of its digits is 630, while the sum is 21.

The square root of 253173 is about 503.1629954597. The cubic root of 253173 is about 63.2614481405.

The spelling of 253173 in words is "two hundred fifty-three thousand, one hundred seventy-three".