1163240255 has 4 divisors (see below), whose sum is σ = 1395888312. Its totient is φ = 930592200.

The previous prime is 1163240227. The next prime is 1163240329. The reversal of 1163240255 is 5520423611.

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

It is not a de Polignac number, because 1163240255 - 2⁶ = 1163240191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 116324021 + ... + 116324030.

It is an arithmetic number, because the mean of its divisors is an integer number (348972078).

Almost surely, 2^1163240255 is an apocalyptic number.

1163240255 is a deficient number, since it is larger than the sum of its proper divisors (232648057).

1163240255 is an equidigital number, since it uses as much as digits as its factorization.

1163240255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232648056.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1163240255 is about 34106.3081408704. The cubic root of 1163240255 is about 1051.6949962635.

Adding to 1163240255 its reverse (5520423611), we get a palindrome (6683663866).

The spelling of 1163240255 in words is "one billion, one hundred sixty-three million, two hundred forty thousand, two hundred fifty-five".