10981549 has 2 divisors, whose sum is σ = 10981550. Its totient is φ = 10981548.

The previous prime is 10981543. The next prime is 10981559. The reversal of 10981549 is 94518901.

10981549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 964324 = 3165^2 + 982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10981549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10981543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5490774 + 5490775.

It is an arithmetic number, because the mean of its divisors is an integer number (5490775).

Almost surely, 2^10981549 is an apocalyptic number.

It is an amenable number.

10981549 is a deficient number, since it is larger than the sum of its proper divisors (1).

10981549 is an equidigital number, since it uses as much as digits as its factorization.

10981549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 10981549 is about 3313.8420300310. The cubic root of 10981549 is about 222.2735920224.

The spelling of 10981549 in words is "ten million, nine hundred eighty-one thousand, five hundred forty-nine".