13851161 has 2 divisors, whose sum is σ = 13851162. Its totient is φ = 13851160.

The previous prime is 13851157. The next prime is 13851163. The reversal of 13851161 is 16115831.

13851161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11095561 + 2755600 = 3331^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 13851161 - 2² = 13851157 is a prime.

It is a super-2 number, since 2×13851161² = 383709322095842, which contains 22 as substring.

Together with 13851163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13851161.

It is not a weakly prime, because it can be changed into another prime (13851163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6925580 + 6925581.

It is an arithmetic number, because the mean of its divisors is an integer number (6925581).

Almost surely, 2^13851161 is an apocalyptic number.

It is an amenable number.

13851161 is a deficient number, since it is larger than the sum of its proper divisors (1).

13851161 is an equidigital number, since it uses as much as digits as its factorization.

13851161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 26.

The square root of 13851161 is about 3721.7147929416. The cubic root of 13851161 is about 240.1570788831.

Adding to 13851161 its reverse (16115831), we get a palindrome (29966992).

The spelling of 13851161 in words is "thirteen million, eight hundred fifty-one thousand, one hundred sixty-one".