253644135 has 16 divisors (see below), whose sum is σ = 407345760. Its totient is φ = 134771840.

The previous prime is 253644119. The next prime is 253644173. The reversal of 253644135 is 531446352.

It is not a de Polignac number, because 253644135 - 2⁴ = 253644119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253644096 and 253644105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27396 + ... + 35465.

It is an arithmetic number, because the mean of its divisors is an integer number (25459110).

Almost surely, 2^253644135 is an apocalyptic number.

253644135 is a deficient number, since it is larger than the sum of its proper divisors (153701625).

253644135 is a wasteful number, since it uses less digits than its factorization.

253644135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63138.

The product of its digits is 43200, while the sum is 33.

The square root of 253644135 is about 15926.2090592834. The cubic root of 253644135 is about 633.0066534693.

The spelling of 253644135 in words is "two hundred fifty-three million, six hundred forty-four thousand, one hundred thirty-five".