1215044255 has 16 divisors (see below), whose sum is σ = 1473780000. Its totient is φ = 961580160.

The previous prime is 1215044219. The next prime is 1215044261. The reversal of 1215044255 is 5524405121.

It is not a de Polignac number, because 1215044255 - 2¹⁴ = 1215027871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440621 + ... + 443369.

It is an arithmetic number, because the mean of its divisors is an integer number (92111250).

Almost surely, 2^1215044255 is an apocalyptic number.

1215044255 is a deficient number, since it is larger than the sum of its proper divisors (258735745).

1215044255 is a wasteful number, since it uses less digits than its factorization.

1215044255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1215044255 is about 34857.4849207455. The cubic root of 1215044255 is about 1067.0809467711.

Adding to 1215044255 its reverse (5524405121), we get a palindrome (6739449376).

The spelling of 1215044255 in words is "one billion, two hundred fifteen million, forty-four thousand, two hundred fifty-five".