13837121 has 2 divisors, whose sum is σ = 13837122. Its totient is φ = 13837120.

The previous prime is 13837079. The next prime is 13837127. The reversal of 13837121 is 12173831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 6574096 = 2695^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13837121 - 2²² = 9642817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13837127) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6918560 + 6918561.

It is an arithmetic number, because the mean of its divisors is an integer number (6918561).

Almost surely, 2^13837121 is an apocalyptic number.

It is an amenable number.

13837121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13837121 is an equidigital number, since it uses as much as digits as its factorization.

13837121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 13837121 is about 3719.8280874255. The cubic root of 13837121 is about 240.0759077022.

The spelling of 13837121 in words is "thirteen million, eight hundred thirty-seven thousand, one hundred twenty-one".