12051609 has 16 divisors (see below), whose sum is σ = 16848000. Its totient is φ = 7648256.

The previous prime is 12051577. The next prime is 12051629. The reversal of 12051609 is 90615021.

It is a cyclic number.

It is not a de Polignac number, because 12051609 - 2⁵ = 12051577 is a prime.

It is a super-3 number, since 3×12051609³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12051629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26617 + ... + 27065.

It is an arithmetic number, because the mean of its divisors is an integer number (1053000).

Almost surely, 2^12051609 is an apocalyptic number.

It is an amenable number.

12051609 is a deficient number, since it is larger than the sum of its proper divisors (4796391).

12051609 is a wasteful number, since it uses less digits than its factorization.

12051609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 12051609 is about 3471.5427406270. The cubic root of 12051609 is about 229.2705877691.

The spelling of 12051609 in words is "twelve million, fifty-one thousand, six hundred nine".