253968253 has 16 divisors (see below), whose sum is σ = 335263104. Its totient is φ = 186255360.

The previous prime is 253968203. The next prime is 253968289. The reversal of 253968253 is 352869352.

It is a cyclic number.

It is not a de Polignac number, because 253968253 - 2²¹ = 251871101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253968203) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 95700 + ... + 98317.

It is an arithmetic number, because the mean of its divisors is an integer number (20953944).

Almost surely, 2^253968253 is an apocalyptic number.

It is an amenable number.

253968253 is a deficient number, since it is larger than the sum of its proper divisors (81294851).

253968253 is a wasteful number, since it uses less digits than its factorization.

253968253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194052.

The product of its digits is 388800, while the sum is 43.

The square root of 253968253 is about 15936.3814274132. The cubic root of 253968253 is about 633.2761669239.

The spelling of 253968253 in words is "two hundred fifty-three million, nine hundred sixty-eight thousand, two hundred fifty-three".