13741561 has 2 divisors, whose sum is σ = 13741562. Its totient is φ = 13741560.

The previous prime is 13741543. The next prime is 13741583. The reversal of 13741561 is 16514731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 2310400 = 3381^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 13741561 - 2⁷ = 13741433 is a prime.

It is not a weakly prime, because it can be changed into another prime (13744561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6870780 + 6870781.

It is an arithmetic number, because the mean of its divisors is an integer number (6870781).

Almost surely, 2^13741561 is an apocalyptic number.

It is an amenable number.

13741561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13741561 is an equidigital number, since it uses as much as digits as its factorization.

13741561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 13741561 is about 3706.9611543689. The cubic root of 13741561 is about 239.5219709535.

It can be divided in two parts, 13741 and 561, that multiplied together give a triangular number (7708701 = T₃₉₂₆).

The spelling of 13741561 in words is "thirteen million, seven hundred forty-one thousand, five hundred sixty-one".