12541645 has 8 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 9906000.

The previous prime is 12541637. The next prime is 12541651. The reversal of 12541645 is 54614521.

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

It is not a de Polignac number, because 12541645 - 2³ = 12541637 is a prime.

It is a super-3 number, since 3×12541645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15481 + ... + 16270.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^12541645 is an apocalyptic number.

It is an amenable number.

12541645 is a deficient number, since it is larger than the sum of its proper divisors (2699315).

12541645 is an equidigital number, since it uses as much as digits as its factorization.

12541645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31835.

The product of its digits is 4800, while the sum is 28.

The square root of 12541645 is about 3541.4185011094. The cubic root of 12541645 is about 232.3368879453.

The spelling of 12541645 in words is "twelve million, five hundred forty-one thousand, six hundred forty-five".