253156605 has 32 divisors (see below), whose sum is σ = 461873664. Its totient is φ = 117298176.

The previous prime is 253156559. The next prime is 253156613. The reversal of 253156605 is 506651352.

It is not a de Polignac number, because 253156605 - 2⁸ = 253156349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34869 + ... + 41498.

It is an arithmetic number, because the mean of its divisors is an integer number (14433552).

Almost surely, 2^253156605 is an apocalyptic number.

It is an amenable number.

253156605 is a deficient number, since it is larger than the sum of its proper divisors (208717059).

253156605 is a wasteful number, since it uses less digits than its factorization.

253156605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76405.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 253156605 is about 15910.8957950205. The cubic root of 253156605 is about 632.6008254751.

The spelling of 253156605 in words is "two hundred fifty-three million, one hundred fifty-six thousand, six hundred five".