253251243 has 12 divisors (see below), whose sum is σ = 418065648. Its totient is φ = 144714960.

The previous prime is 253251221. The next prime is 253251253. The reversal of 253251243 is 342152352.

It is a happy number.

253251243 is a `hidden beast` number, since 2 + 532 + 5 + 124 + 3 = 666.

It is not a de Polignac number, because 253251243 - 2⁶ = 253251179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253251203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2009868 + ... + 2009993.

It is an arithmetic number, because the mean of its divisors is an integer number (34838804).

Almost surely, 2^253251243 is an apocalyptic number.

253251243 is a deficient number, since it is larger than the sum of its proper divisors (164814405).

253251243 is a wasteful number, since it uses less digits than its factorization.

253251243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019874 (or 4019871 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 253251243 is about 15913.8695168711. The cubic root of 253251243 is about 632.6796444315.

The spelling of 253251243 in words is "two hundred fifty-three million, two hundred fifty-one thousand, two hundred forty-three".