253135 has 4 divisors (see below), whose sum is σ = 303768. Its totient is φ = 202504.

The previous prime is 253133. The next prime is 253153. The reversal of 253135 is 531352.

253135 = 223² + 224² + ... + 227².

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 253135 - 2¹ = 253133 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 (253133) 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, 25309 + ... + 25318.

It is an arithmetic number, because the mean of its divisors is an integer number (75942).

253135 is a Friedman number, since it can be written as 5*((5*3)^(3+1)+2), using all its digits and the basic arithmetic operations.

2²⁵³¹³⁵ is an apocalyptic number.

253135 is a deficient number, since it is larger than the sum of its proper divisors (50633).

253135 is an equidigital number, since it uses as much as digits as its factorization.

253135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50632.

The product of its digits is 450, while the sum is 19.

The square root of 253135 is about 503.1252329192. The cubic root of 253135 is about 63.2582829066.

Subtracting from 253135 its sum of digits (19), we obtain a triangular number (253116 = T₇₁₁).

Adding to 253135 its reverse (531352), we get a palindrome (784487).

It can be divided in two parts, 25 and 3135, that added together give a triangular number (3160 = T₇₉).

The spelling of 253135 in words is "two hundred fifty-three thousand, one hundred thirty-five".