253844287 has 12 divisors (see below), whose sum is σ = 260838160. Its totient is φ = 246989952.

The previous prime is 253844273. The next prime is 253844291. The reversal of 253844287 is 782448352.

It is a de Polignac number, because none of the positive numbers 2^k-253844287 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253844387) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 578014 + ... + 578452.

Almost surely, 2^253844287 is an apocalyptic number.

253844287 is a deficient number, since it is larger than the sum of its proper divisors (6993873).

253844287 is an frugal number, since it uses more digits than its factorization.

253844287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 601 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 253844287 is about 15932.4915502880. The cubic root of 253844287 is about 633.1731127180.

The spelling of 253844287 in words is "two hundred fifty-three million, eight hundred forty-four thousand, two hundred eighty-seven".