540221266 has 8 divisors (see below), whose sum is σ = 872665164. Its totient is φ = 249332880.

The previous prime is 540221261. The next prime is 540221267. The reversal of 540221266 is 662122045.

It can be written as a sum of positive squares in 2 ways, for example, as 534580641 + 5640625 = 23121^2 + 2375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (540221261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10388845 + ... + 10388896.

Almost surely, 2^540221266 is an apocalyptic number.

540221266 is a deficient number, since it is larger than the sum of its proper divisors (332443898).

540221266 is a wasteful number, since it uses less digits than its factorization.

540221266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20777756.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 540221266 is about 23242.6604759438. The cubic root of 540221266 is about 814.4364935551.

The spelling of 540221266 in words is "five hundred forty million, two hundred twenty-one thousand, two hundred sixty-six".