540005633 has 4 divisors (see below), whose sum is σ = 541535748. Its totient is φ = 538475520.

The previous prime is 540005621. The next prime is 540005659. The reversal of 540005633 is 336500045.

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

It can be written as a sum of positive squares in 2 ways, for example, as 398681089 + 141324544 = 19967^2 + 11888^2 .

It is a cyclic number.

It is not a de Polignac number, because 540005633 - 2⁸ = 540005377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540005603) 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, 764528 + ... + 765233.

It is an arithmetic number, because the mean of its divisors is an integer number (135383937).

Almost surely, 2^540005633 is an apocalyptic number.

It is an amenable number.

540005633 is a deficient number, since it is larger than the sum of its proper divisors (1530115).

540005633 is a wasteful number, since it uses less digits than its factorization.

540005633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530114.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 540005633 is about 23238.0212797906. The cubic root of 540005633 is about 814.3281165083.

Adding to 540005633 its reverse (336500045), we get a palindrome (876505678).

The spelling of 540005633 in words is "five hundred forty million, five thousand, six hundred thirty-three".