201599 has 2 divisors, whose sum is σ = 201600. Its totient is φ = 201598.

The previous prime is 201589. The next prime is 201611. The reversal of 201599 is 995102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100799 + 100800.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2²⁰¹⁵⁹⁹ is an apocalyptic number.

201599 is a deficient number, since it is larger than the sum of its proper divisors (1).

201599 is an equidigital number, since it uses as much as digits as its factorization.

201599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 201599 is about 448.9977728230. The cubic root of 201599 is about 58.6357914041.

The spelling of 201599 in words is "two hundred one thousand, five hundred ninety-nine".