201284545 has 32 divisors (see below), whose sum is σ = 304819200. Its totient is φ = 123944640.

The previous prime is 201284533. The next prime is 201284593. The reversal of 201284545 is 545482102.

It is not a de Polignac number, because 201284545 - 2¹⁹ = 200760257 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 28806 + ... + 35104.

It is an arithmetic number, because the mean of its divisors is an integer number (9525600).

Almost surely, 2^201284545 is an apocalyptic number.

It is an amenable number.

201284545 is a deficient number, since it is larger than the sum of its proper divisors (103534655).

201284545 is a wasteful number, since it uses less digits than its factorization.

201284545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 201284545 is about 14187.4784581334. The cubic root of 201284545 is about 586.0528875143.

The spelling of 201284545 in words is "two hundred one million, two hundred eighty-four thousand, five hundred forty-five".