540066001 has 4 divisors (see below), whose sum is σ = 548919604. Its totient is φ = 531212400.

The previous prime is 540065989. The next prime is 540066019. The reversal of 540066001 is 100660045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100660045 = 5 ⋅20132009.

It can be written as a sum of positive squares in 2 ways, for example, as 309056400 + 231009601 = 17580^2 + 15199^2 .

It is not a de Polignac number, because 540066001 - 2¹⁷ = 539934929 is a prime.

It is a super-2 number, since 2×540066001² = 583342570872264002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540066031) 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, 4426710 + ... + 4426831.

It is an arithmetic number, because the mean of its divisors is an integer number (137229901).

Almost surely, 2^540066001 is an apocalyptic number.

It is an amenable number.

540066001 is a deficient number, since it is larger than the sum of its proper divisors (8853603).

540066001 is an equidigital number, since it uses as much as digits as its factorization.

540066001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853602.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 540066001 is about 23239.3201492643. The cubic root of 540066001 is about 814.3584603449.

The spelling of 540066001 in words is "five hundred forty million, sixty-six thousand, one".