253723 has 4 divisors (see below), whose sum is σ = 254800. Its totient is φ = 252648.

The previous prime is 253717. The next prime is 253733. The reversal of 253723 is 327352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 253723 - 2¹⁷ = 122651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253694 and 253703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253703) 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, 15 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (63700).

2²⁵³⁷²³ is an apocalyptic number.

253723 is a deficient number, since it is larger than the sum of its proper divisors (1077).

253723 is an equidigital number, since it uses as much as digits as its factorization.

253723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its digits is 1260, while the sum is 22.

The square root of 253723 is about 503.7092415273. The cubic root of 253723 is about 63.3072253116.

The spelling of 253723 in words is "two hundred fifty-three thousand, seven hundred twenty-three".