201617543 has 2 divisors, whose sum is σ = 201617544. Its totient is φ = 201617542.

The previous prime is 201617509. The next prime is 201617561. The reversal of 201617543 is 345716102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201617543 - 2¹⁴ = 201601159 is a prime.

It is equal to p_11163584 and since 201617543 and 11163584 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201617503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100808771 + 100808772.

It is an arithmetic number, because the mean of its divisors is an integer number (100808772).

Almost surely, 2^201617543 is an apocalyptic number.

201617543 is a deficient number, since it is larger than the sum of its proper divisors (1).

201617543 is an equidigital number, since it uses as much as digits as its factorization.

201617543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 201617543 is about 14199.2092385456. The cubic root of 201617543 is about 586.3758911497.

The spelling of 201617543 in words is "two hundred one million, six hundred seventeen thousand, five hundred forty-three".