540066221 has 8 divisors (see below), whose sum is σ = 563238144. Its totient is φ = 517253760.

The previous prime is 540066209. The next prime is 540066223. The reversal of 540066221 is 122660045.

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

It is a cyclic number.

It is not a de Polignac number, because 540066221 - 2⁶ = 540066157 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 (540066223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86795 + ... + 92808.

It is an arithmetic number, because the mean of its divisors is an integer number (70404768).

Almost surely, 2^540066221 is an apocalyptic number.

It is an amenable number.

540066221 is a deficient number, since it is larger than the sum of its proper divisors (23171923).

540066221 is a wasteful number, since it uses less digits than its factorization.

540066221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179731.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 540066221 is about 23239.3248826208. The cubic root of 540066221 is about 814.3585709232.

The spelling of 540066221 in words is "five hundred forty million, sixty-six thousand, two hundred twenty-one".