540330817 has 4 divisors (see below), whose sum is σ = 581894740. Its totient is φ = 498766896.

The previous prime is 540330809. The next prime is 540330823. The reversal of 540330817 is 718033045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 718033045 = 5 ⋅143606609.

It can be written as a sum of positive squares in 2 ways, for example, as 373301041 + 167029776 = 19321^2 + 12924^2 .

It is a cyclic number.

It is not a de Polignac number, because 540330817 - 2³ = 540330809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540330887) 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 3 ways as a sum of consecutive naturals, for example, 20781942 + ... + 20781967.

It is an arithmetic number, because the mean of its divisors is an integer number (145473685).

Almost surely, 2^540330817 is an apocalyptic number.

It is an amenable number.

540330817 is a deficient number, since it is larger than the sum of its proper divisors (41563923).

540330817 is a wasteful number, since it uses less digits than its factorization.

540330817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41563922.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 540330817 is about 23245.0170359155. The cubic root of 540330817 is about 814.4915427898.

The spelling of 540330817 in words is "five hundred forty million, three hundred thirty thousand, eight hundred seventeen".