253711 has 4 divisors (see below), whose sum is σ = 258552. Its totient is φ = 248872.

The previous prime is 253703. The next prime is 253717. The reversal of 253711 is 117352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253711 - 2³ = 253703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253717) 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, 2341 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (64638).

2²⁵³⁷¹¹ is an apocalyptic number.

253711 is a deficient number, since it is larger than the sum of its proper divisors (4841).

253711 is an equidigital number, since it uses as much as digits as its factorization.

253711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840.

The product of its digits is 210, while the sum is 19.

The square root of 253711 is about 503.6973297527. The cubic root of 253711 is about 63.3062272432.

The spelling of 253711 in words is "two hundred fifty-three thousand, seven hundred eleven".