201449543 has 2 divisors, whose sum is σ = 201449544. Its totient is φ = 201449542.

The previous prime is 201449509. The next prime is 201449557. The reversal of 201449543 is 345944102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201449543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201449593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100724771 + 100724772.

It is an arithmetic number, because the mean of its divisors is an integer number (100724772).

Almost surely, 2^201449543 is an apocalyptic number.

201449543 is a deficient number, since it is larger than the sum of its proper divisors (1).

201449543 is an equidigital number, since it uses as much as digits as its factorization.

201449543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 201449543 is about 14193.2921832815. The cubic root of 201449543 is about 586.2129778722.

The spelling of 201449543 in words is "two hundred one million, four hundred forty-nine thousand, five hundred forty-three".