1215003055 has 32 divisors (see below), whose sum is σ = 1710618624. Its totient is φ = 811109376.

The previous prime is 1215003011. The next prime is 1215003091. The reversal of 1215003055 is 5503005121.

It is not a de Polignac number, because 1215003055 - 2⁹ = 1215002543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530122 + ... + 532408.

It is an arithmetic number, because the mean of its divisors is an integer number (53456832).

Almost surely, 2^1215003055 is an apocalyptic number.

1215003055 is a deficient number, since it is larger than the sum of its proper divisors (495615569).

1215003055 is a wasteful number, since it uses less digits than its factorization.

1215003055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1215003055 is about 34856.8939379285. The cubic root of 1215003055 is about 1067.0688856927.

Adding to 1215003055 its reverse (5503005121), we get a palindrome (6718008176).

The spelling of 1215003055 in words is "one billion, two hundred fifteen million, three thousand, fifty-five".