12051516 has 12 divisors (see below), whose sum is σ = 28120232. Its totient is φ = 4017168.

The previous prime is 12051509. The next prime is 12051541. The reversal of 12051516 is 61515021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12051492 and 12051501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502135 + ... + 502158.

Almost surely, 2^12051516 is an apocalyptic number.

It is an amenable number.

12051516 is an abundant number, since it is smaller than the sum of its proper divisors (16068716).

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

12051516 is a wasteful number, since it uses less digits than its factorization.

12051516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004300 (or 1004298 counting only the distinct ones).

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

The square root of 12051516 is about 3471.5293459800. The cubic root of 12051516 is about 229.2699980216.

Adding to 12051516 its reverse (61515021), we get a palindrome (73566537).

The spelling of 12051516 in words is "twelve million, fifty-one thousand, five hundred sixteen".