12561941 has 8 divisors (see below), whose sum is σ = 14462400. Its totient is φ = 10687968.

The previous prime is 12561931. The next prime is 12561947. The reversal of 12561941 is 14916521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12561941 - 2⁶ = 12561877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12561947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5591 + ... + 7508.

It is an arithmetic number, because the mean of its divisors is an integer number (1807800).

Almost surely, 2^12561941 is an apocalyptic number.

It is an amenable number.

12561941 is a deficient number, since it is larger than the sum of its proper divisors (1900459).

12561941 is a wasteful number, since it uses less digits than its factorization.

12561941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13243.

The product of its digits is 2160, while the sum is 29.

The square root of 12561941 is about 3544.2828611723. The cubic root of 12561941 is about 232.4621497717.

The spelling of 12561941 in words is "twelve million, five hundred sixty-one thousand, nine hundred forty-one".