540522511 has 4 divisors (see below), whose sum is σ = 540921024. Its totient is φ = 540124000.

The previous prime is 540522491. The next prime is 540522523. The reversal of 540522511 is 115225045.

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

It is a cyclic number.

It is not a de Polignac number, because 540522511 - 2¹⁹ = 539998223 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 (540522571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197215 + ... + 199936.

It is an arithmetic number, because the mean of its divisors is an integer number (135230256).

Almost surely, 2^540522511 is an apocalyptic number.

540522511 is a deficient number, since it is larger than the sum of its proper divisors (398513).

540522511 is a wasteful number, since it uses less digits than its factorization.

540522511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398512.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 540522511 is about 23249.1400056002. The cubic root of 540522511 is about 814.5878508766.

Adding to 540522511 its reverse (115225045), we get a palindrome (655747556).

The spelling of 540522511 in words is "five hundred forty million, five hundred twenty-two thousand, five hundred eleven".