1215001506 has 16 divisors (see below), whose sum is σ = 2431692864. Its totient is φ = 404718864.

The previous prime is 1215001483. The next prime is 1215001537. The reversal of 1215001506 is 6051005121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60966 + ... + 78401.

It is an arithmetic number, because the mean of its divisors is an integer number (151980804).

Almost surely, 2^1215001506 is an apocalyptic number.

1215001506 is an abundant number, since it is smaller than the sum of its proper divisors (1216691358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215001506 is a wasteful number, since it uses less digits than its factorization.

1215001506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140825.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1215001506 is about 34856.8717185005. The cubic root of 1215001506 is about 1067.0684322260.

Adding to 1215001506 its reverse (6051005121), we get a palindrome (7266006627).

The spelling of 1215001506 in words is "one billion, two hundred fifteen million, one thousand, five hundred six".