201996539 has 4 divisors (see below), whose sum is σ = 202075056. Its totient is φ = 201918024.

The previous prime is 201996523. The next prime is 201996551. The reversal of 201996539 is 935699102.

201996539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201996539 - 2⁴ = 201996523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201996539.

It is not an unprimeable number, because it can be changed into a prime (201996139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35264 + ... + 40589.

It is an arithmetic number, because the mean of its divisors is an integer number (50518764).

Almost surely, 2^201996539 is an apocalyptic number.

201996539 is a deficient number, since it is larger than the sum of its proper divisors (78517).

201996539 is an equidigital number, since it uses as much as digits as its factorization.

201996539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78516.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 201996539 is about 14212.5486454752. The cubic root of 201996539 is about 586.7430797865.

The spelling of 201996539 in words is "two hundred one million, nine hundred ninety-six thousand, five hundred thirty-nine".