540052309 has 4 divisors (see below), whose sum is σ = 542880000. Its totient is φ = 537224620.

The previous prime is 540052301. The next prime is 540052363. The reversal of 540052309 is 903250045.

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 not a de Polignac number, because 540052309 - 2³ = 540052301 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 (540052301) 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, 1413559 + ... + 1413940.

It is an arithmetic number, because the mean of its divisors is an integer number (135720000).

Almost surely, 2^540052309 is an apocalyptic number.

It is an amenable number.

540052309 is a deficient number, since it is larger than the sum of its proper divisors (2827691).

540052309 is a wasteful number, since it uses less digits than its factorization.

540052309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827690.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 540052309 is about 23239.0255604662. The cubic root of 540052309 is about 814.3515782908.

The spelling of 540052309 in words is "five hundred forty million, fifty-two thousand, three hundred nine".