253193155 has 16 divisors (see below), whose sum is σ = 322695360. Its totient is φ = 190052352.

The previous prime is 253193141. The next prime is 253193179. The reversal of 253193155 is 551391352.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253193155 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253193155.

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, 24226 + ... + 33064.

It is an arithmetic number, because the mean of its divisors is an integer number (20168460).

Almost surely, 2^253193155 is an apocalyptic number.

253193155 is a deficient number, since it is larger than the sum of its proper divisors (69502205).

253193155 is a wasteful number, since it uses less digits than its factorization.

253193155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9198.

The product of its digits is 20250, while the sum is 34.

The square root of 253193155 is about 15912.0443375451. The cubic root of 253193155 is about 632.6312683539.

The spelling of 253193155 in words is "two hundred fifty-three million, one hundred ninety-three thousand, one hundred fifty-five".