1215182255 has 8 divisors (see below), whose sum is σ = 1666535712. Its totient is φ = 833267808.

The previous prime is 1215182239. The next prime is 1215182261. The reversal of 1215182255 is 5522815121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215182255 - 2⁴ = 1215182239 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 7 ways as a sum of consecutive naturals, for example, 17359712 + ... + 17359781.

It is an arithmetic number, because the mean of its divisors is an integer number (208316964).

Almost surely, 2^1215182255 is an apocalyptic number.

1215182255 is a deficient number, since it is larger than the sum of its proper divisors (451353457).

1215182255 is an equidigital number, since it uses as much as digits as its factorization.

1215182255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34719505.

The product of its digits is 8000, while the sum is 32.

The square root of 1215182255 is about 34859.4643533144. The cubic root of 1215182255 is about 1067.1213435427.

Adding to 1215182255 its reverse (5522815121), we get a palindrome (6737997376).

The spelling of 1215182255 in words is "one billion, two hundred fifteen million, one hundred eighty-two thousand, two hundred fifty-five".