13051261 has 2 divisors, whose sum is σ = 13051262. Its totient is φ = 13051260.

The previous prime is 13051237. The next prime is 13051273. The reversal of 13051261 is 16215031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9647236 + 3404025 = 3106^2 + 1845^2 .

It is a cyclic number.

It is not a de Polignac number, because 13051261 - 2⁵ = 13051229 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 (13051201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6525630 + 6525631.

It is an arithmetic number, because the mean of its divisors is an integer number (6525631).

Almost surely, 2^13051261 is an apocalyptic number.

It is an amenable number.

13051261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13051261 is an equidigital number, since it uses as much as digits as its factorization.

13051261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 13051261 is about 3612.6529033385. The cubic root of 13051261 is about 235.4421192553.

Adding to 13051261 its reverse (16215031), we get a palindrome (29266292).

The spelling of 13051261 in words is "thirteen million, fifty-one thousand, two hundred sixty-one".