540504109 has 4 divisors (see below), whose sum is σ = 553074016. Its totient is φ = 527934204.

The previous prime is 540504067. The next prime is 540504113. The reversal of 540504109 is 901405045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540504109 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 (540504119) 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, 6284889 + ... + 6284974.

It is an arithmetic number, because the mean of its divisors is an integer number (138268504).

Almost surely, 2^540504109 is an apocalyptic number.

It is an amenable number.

540504109 is a deficient number, since it is larger than the sum of its proper divisors (12569907).

540504109 is a wasteful number, since it uses less digits than its factorization.

540504109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12569906.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 540504109 is about 23248.7442456577. The cubic root of 540504109 is about 814.5786066018.

The spelling of 540504109 in words is "five hundred forty million, five hundred four thousand, one hundred nine".