12061515 has 16 divisors (see below), whose sum is σ = 19342368. Its totient is φ = 6418176.

The previous prime is 12061501. The next prime is 12061531. The reversal of 12061515 is 51516021.

12061515 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12061515 - 2⁹ = 12061003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12061491 and 12061500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10447 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (1208898).

Almost surely, 2^12061515 is an apocalyptic number.

12061515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12061515 is a deficient number, since it is larger than the sum of its proper divisors (7280853).

12061515 is a wasteful number, since it uses less digits than its factorization.

12061515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838.

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

The square root of 12061515 is about 3472.9691907646. The cubic root of 12061515 is about 229.3333880269. Note that the first 4 decimals are identical.

Adding to 12061515 its reverse (51516021), we get a palindrome (63577536).

The spelling of 12061515 in words is "twelve million, sixty-one thousand, five hundred fifteen".