12541661 has 8 divisors (see below), whose sum is σ = 13906848. Its totient is φ = 11214000.

The previous prime is 12541651. The next prime is 12541667. The reversal of 12541661 is 16614521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12541661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12541661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12541667) 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, 8675 + ... + 10016.

It is an arithmetic number, because the mean of its divisors is an integer number (1738356).

Almost surely, 2^12541661 is an apocalyptic number.

12541661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12541661 is a deficient number, since it is larger than the sum of its proper divisors (1365187).

12541661 is a wasteful number, since it uses less digits than its factorization.

12541661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18763.

The product of its digits is 1440, while the sum is 26.

The square root of 12541661 is about 3541.4207600905. The cubic root of 12541661 is about 232.3369867465.

The spelling of 12541661 in words is "twelve million, five hundred forty-one thousand, six hundred sixty-one".