1215010550 has 48 divisors (see below), whose sum is σ = 2439968832. Its totient is φ = 447475200.

The previous prime is 1215010549. The next prime is 1215010571. The reversal of 1215010550 is 550105121.

It is a happy number.

It is a super-2 number, since 2×1215010550² = 2952501273222605000, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 277982 + ... + 282318.

It is an arithmetic number, because the mean of its divisors is an integer number (50832684).

Almost surely, 2^1215010550 is an apocalyptic number.

1215010550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215010550 is an abundant number, since it is smaller than the sum of its proper divisors (1224958282).

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

1215010550 is a wasteful number, since it uses less digits than its factorization.

1215010550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793 (or 4788 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 1215010550 is about 34857.0014487764. The cubic root of 1215010550 is about 1067.0710798339.

Adding to 1215010550 its reverse (550105121), we get a palindrome (1765115671).

The spelling of 1215010550 in words is "one billion, two hundred fifteen million, ten thousand, five hundred fifty".