1215162055 has 8 divisors (see below), whose sum is σ = 1465830144. Its totient is φ = 967039200.

The previous prime is 1215162041. The next prime is 1215162071. The reversal of 1215162055 is 5502615121.

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

It is not a de Polignac number, because 1215162055 - 2¹⁷ = 1215030983 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, 635256 + ... + 637165.

It is an arithmetic number, because the mean of its divisors is an integer number (183228768).

Almost surely, 2^1215162055 is an apocalyptic number.

1215162055 is a deficient number, since it is larger than the sum of its proper divisors (250668089).

1215162055 is a wasteful number, since it uses less digits than its factorization.

1215162055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272617.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1215162055 is about 34859.1746173084. The cubic root of 1215162055 is about 1067.1154305832.

Adding to 1215162055 its reverse (5502615121), we get a palindrome (6717777176).

The spelling of 1215162055 in words is "one billion, two hundred fifteen million, one hundred sixty-two thousand, fifty-five".