12047561 has 16 divisors (see below), whose sum is σ = 13237248. Its totient is φ = 10929600.

The previous prime is 12047551. The next prime is 12047569. The reversal of 12047561 is 16574021.

It is not a de Polignac number, because 12047561 - 2²² = 7853257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12047561.

It is not an unprimeable number, because it can be changed into a prime (12047569) 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, 43355 + ... + 43631.

It is an arithmetic number, because the mean of its divisors is an integer number (827328).

Almost surely, 2^12047561 is an apocalyptic number.

It is an amenable number.

12047561 is a deficient number, since it is larger than the sum of its proper divisors (1189687).

12047561 is a wasteful number, since it uses less digits than its factorization.

12047561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12047561 is about 3470.9596655680. The cubic root of 12047561 is about 229.2449150901.

The spelling of 12047561 in words is "twelve million, forty-seven thousand, five hundred sixty-one".