201445650 has 96 divisors (see below), whose sum is σ = 634423680. Its totient is φ = 46042560.

The previous prime is 201445609. The next prime is 201445663. The reversal of 201445650 is 56544102.

201445650 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 4 + 5 + 650 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1209 + ... + 20108.

It is an arithmetic number, because the mean of its divisors is an integer number (6608580).

Almost surely, 2^201445650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201445650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317211840).

201445650 is an abundant number, since it is smaller than the sum of its proper divisors (432978030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201445650 is a wasteful number, since it uses less digits than its factorization.

201445650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21345 (or 21334 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 201445650 is about 14193.1550403707. The cubic root of 201445650 is about 586.2092016713.

Adding to 201445650 its reverse (56544102), we get a palindrome (257989752).

The spelling of 201445650 in words is "two hundred one million, four hundred forty-five thousand, six hundred fifty".