13261147 has 4 divisors (see below), whose sum is σ = 13390000. Its totient is φ = 13132296.

The previous prime is 13261123. The next prime is 13261153. The reversal of 13261147 is 74116231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74116231 = 7 ⋅10588033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13261147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13261187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64272 + ... + 64477.

It is an arithmetic number, because the mean of its divisors is an integer number (3347500).

Almost surely, 2^13261147 is an apocalyptic number.

13261147 is a deficient number, since it is larger than the sum of its proper divisors (128853).

13261147 is a wasteful number, since it uses less digits than its factorization.

13261147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128852.

The product of its digits is 1008, while the sum is 25.

The square root of 13261147 is about 3641.5857809476. The cubic root of 13261147 is about 236.6975138879.

Adding to 13261147 its reverse (74116231), we get a palindrome (87377378).

The spelling of 13261147 in words is "thirteen million, two hundred sixty-one thousand, one hundred forty-seven".