540506506 has 4 divisors (see below), whose sum is σ = 810759762. Its totient is φ = 270253252.

The previous prime is 540506489. The next prime is 540506513. The reversal of 540506506 is 605605045.

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

It can be written as a sum of positive squares in only one way, i.e., 285305881 + 255200625 = 16891^2 + 15975^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135126625 + ... + 135126628.

Almost surely, 2^540506506 is an apocalyptic number.

540506506 is a deficient number, since it is larger than the sum of its proper divisors (270253256).

540506506 is a wasteful number, since it uses less digits than its factorization.

540506506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270253255.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 540506506 is about 23248.7957967719. The cubic root of 540506506 is about 814.5798107506.

The spelling of 540506506 in words is "five hundred forty million, five hundred six thousand, five hundred six".