253045243 has 6 divisors (see below), whose sum is σ = 278140772. Its totient is φ = 230041020.

The previous prime is 253045237. The next prime is 253045253. The reversal of 253045243 is 342540352.

It is not a de Polignac number, because 253045243 - 2⁹ = 253044731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253045253) 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 5 ways as a sum of consecutive naturals, for example, 1045521 + ... + 1045762.

Almost surely, 2^253045243 is an apocalyptic number.

253045243 is a deficient number, since it is larger than the sum of its proper divisors (25095529).

253045243 is a wasteful number, since it uses less digits than its factorization.

253045243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091305 (or 2091294 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 253045243 is about 15907.3958585307. The cubic root of 253045243 is about 632.5080528275.

Adding to 253045243 its reverse (342540352), we get a palindrome (595585595).

The spelling of 253045243 in words is "two hundred fifty-three million, forty-five thousand, two hundred forty-three".