12541538 has 4 divisors (see below), whose sum is σ = 18812310. Its totient is φ = 6270768.

The previous prime is 12541537. The next prime is 12541541. The reversal of 12541538 is 83514521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10936249 + 1605289 = 3307^2 + 1267^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12541538.

It is not an unprimeable number, because it can be changed into a prime (12541537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3135383 + ... + 3135386.

Almost surely, 2^12541538 is an apocalyptic number.

12541538 is a deficient number, since it is larger than the sum of its proper divisors (6270772).

12541538 is an equidigital number, since it uses as much as digits as its factorization.

12541538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270771.

The product of its digits is 4800, while the sum is 29.

The square root of 12541538 is about 3541.4033941363. The cubic root of 12541538 is about 232.3362272101.

The spelling of 12541538 in words is "twelve million, five hundred forty-one thousand, five hundred thirty-eight".