201009051 has 6 divisors (see below), whose sum is σ = 290346420. Its totient is φ = 134006028.

The previous prime is 201009031. The next prime is 201009073. The reversal of 201009051 is 150900102.

It is not a de Polignac number, because 201009051 - 2⁶ = 201008987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201009001) 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 5 ways as a sum of consecutive naturals, for example, 11167161 + ... + 11167178.

It is an arithmetic number, because the mean of its divisors is an integer number (48391070).

Almost surely, 2^201009051 is an apocalyptic number.

201009051 is a deficient number, since it is larger than the sum of its proper divisors (89337369).

201009051 is a wasteful number, since it uses less digits than its factorization.

201009051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334345 (or 22334342 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 201009051 is about 14177.7660793229. The cubic root of 201009051 is about 585.7853926107.

Adding to 201009051 its reverse (150900102), we get a palindrome (351909153).

The spelling of 201009051 in words is "two hundred one million, nine thousand, fifty-one".