12775501 has 4 divisors (see below), whose sum is σ = 12788604. Its totient is φ = 12762400.

The previous prime is 12775489. The next prime is 12775519. The reversal of 12775501 is 10557721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8259876 + 4515625 = 2874^2 + 2125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12775501 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 12775501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12715501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4960 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (3197151).

Almost surely, 2^12775501 is an apocalyptic number.

It is an amenable number.

12775501 is a deficient number, since it is larger than the sum of its proper divisors (13103).

12775501 is a wasteful number, since it uses less digits than its factorization.

12775501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13102.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 12775501 is about 3574.2832847999. The cubic root of 12775501 is about 233.7720830939.

The spelling of 12775501 in words is "twelve million, seven hundred seventy-five thousand, five hundred one".