1521516216 has 32 divisors (see below), whose sum is σ = 4149590400. Its totient is φ = 461065440.

The previous prime is 1521516211. The next prime is 1521516223. The reversal of 1521516216 is 6126151251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521516211) by changing a digit.

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, 2881396 + ... + 2881923.

It is an arithmetic number, because the mean of its divisors is an integer number (129674700).

Almost surely, 2^1521516216 is an apocalyptic number.

It is an amenable number.

1521516216 is an abundant number, since it is smaller than the sum of its proper divisors (2628074184).

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

1521516216 is a wasteful number, since it uses less digits than its factorization.

1521516216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763339 (or 5763335 counting only the distinct ones).

The product of its digits is 3600, while the sum is 30.

The square root of 1521516216 is about 39006.6175924035. The cubic root of 1521516216 is about 1150.1615944314.

Adding to 1521516216 its reverse (6126151251), we get a palindrome (7647667467).

The spelling of 1521516216 in words is "one billion, five hundred twenty-one million, five hundred sixteen thousand, two hundred sixteen".