13531277 has 2 divisors, whose sum is σ = 13531278. Its totient is φ = 13531276.

The previous prime is 13531229. The next prime is 13531319. The reversal of 13531277 is 77213531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 6056521 = 2734^2 + 2461^2 .

It is an emirp because it is prime and its reverse (77213531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13531277 - 2¹² = 13527181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531577) 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 as a sum of consecutive naturals, namely, 6765638 + 6765639.

It is an arithmetic number, because the mean of its divisors is an integer number (6765639).

Almost surely, 2^13531277 is an apocalyptic number.

It is an amenable number.

13531277 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531277 is an equidigital number, since it uses as much as digits as its factorization.

13531277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4410, while the sum is 29.

The square root of 13531277 is about 3678.4884123781. The cubic root of 13531277 is about 238.2939016817.

The spelling of 13531277 in words is "thirteen million, five hundred thirty-one thousand, two hundred seventy-seven".