540808045 has 4 divisors (see below), whose sum is σ = 648969660. Its totient is φ = 432646432.

The previous prime is 540808043. The next prime is 540808061.

540808045 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100060009 + 440748036 = 10003^2 + 20994^2 .

It is a cyclic number.

It is not a de Polignac number, because 540808045 - 2¹ = 540808043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540808045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540808043) 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, 54080800 + ... + 54080809.

It is an arithmetic number, because the mean of its divisors is an integer number (162242415).

Almost surely, 2^540808045 is an apocalyptic number.

It is an amenable number.

540808045 is a deficient number, since it is larger than the sum of its proper divisors (108161615).

540808045 is a wasteful number, since it uses less digits than its factorization.

540808045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108161614.

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 540808045 is about 23255.2799381130. The cubic root of 540808045 is about 814.7312624697.

The spelling of 540808045 in words is "five hundred forty million, eight hundred eight thousand, forty-five".