10243549 has 2 divisors, whose sum is σ = 10243550. Its totient is φ = 10243548.

The previous prime is 10243543. The next prime is 10243553. The reversal of 10243549 is 94534201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8082649 + 2160900 = 2843^2 + 1470^2 .

It is a cyclic number.

It is not a de Polignac number, because 10243549 - 2⁷ = 10243421 is a prime.

It is a super-2 number, since 2×10243549² = 209860592230802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10243543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5121774 + 5121775.

It is an arithmetic number, because the mean of its divisors is an integer number (5121775).

Almost surely, 2^10243549 is an apocalyptic number.

It is an amenable number.

10243549 is a deficient number, since it is larger than the sum of its proper divisors (1).

10243549 is an equidigital number, since it uses as much as digits as its factorization.

10243549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 10243549 is about 3200.5544832107. The cubic root of 10243549 is about 217.1784935865.

The spelling of 10243549 in words is "ten million, two hundred forty-three thousand, five hundred forty-nine".