255013243 has 4 divisors (see below), whose sum is σ = 270014040. Its totient is φ = 240012448.

The previous prime is 255013219. The next prime is 255013247. The reversal of 255013243 is 342310552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255013243 - 2¹⁷ = 254882171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255013247) 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 3 ways as a sum of consecutive naturals, for example, 7500373 + ... + 7500406.

It is an arithmetic number, because the mean of its divisors is an integer number (67503510).

Almost surely, 2^255013243 is an apocalyptic number.

255013243 is a deficient number, since it is larger than the sum of its proper divisors (15000797).

255013243 is a wasteful number, since it uses less digits than its factorization.

255013243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000796.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 255013243 is about 15969.1340717022. The cubic root of 255013243 is about 634.1435478879.

Adding to 255013243 its reverse (342310552), we get a palindrome (597323795).

The spelling of 255013243 in words is "two hundred fifty-five million, thirteen thousand, two hundred forty-three".