253129 has 4 divisors (see below), whose sum is σ = 254340. Its totient is φ = 251920.

The previous prime is 253109. The next prime is 253133. The reversal of 253129 is 921352.

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 can be written as a sum of positive squares in 2 ways, for example, as 76729 + 176400 = 277^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 253129 - 2⁹ = 252617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202 + ... + 739.

It is an arithmetic number, because the mean of its divisors is an integer number (63585).

2²⁵³¹²⁹ is an apocalyptic number.

It is an amenable number.

253129 is a deficient number, since it is larger than the sum of its proper divisors (1211).

253129 is an equidigital number, since it uses as much as digits as its factorization.

253129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its digits is 540, while the sum is 22.

The square root of 253129 is about 503.1192701537. The cubic root of 253129 is about 63.2577831038.

The spelling of 253129 in words is "two hundred fifty-three thousand, one hundred twenty-nine".