201072061 has 4 divisors (see below), whose sum is σ = 201669052. Its totient is φ = 200475072.

The previous prime is 201072037. The next prime is 201072083. The reversal of 201072061 is 160270102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20304036 + 180768025 = 4506^2 + 13445^2 .

It is a cyclic number.

It is not a de Polignac number, because 201072061 - 2⁵ = 201072029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201072961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297990 + ... + 298663.

It is an arithmetic number, because the mean of its divisors is an integer number (50417263).

Almost surely, 2^201072061 is an apocalyptic number.

It is an amenable number.

201072061 is a deficient number, since it is larger than the sum of its proper divisors (596991).

201072061 is an equidigital number, since it uses as much as digits as its factorization.

201072061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596990.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 201072061 is about 14179.9880465394. The cubic root of 201072061 is about 585.8465946334.

The spelling of 201072061 in words is "two hundred one million, seventy-two thousand, sixty-one".