540011623 has 4 divisors (see below), whose sum is σ = 551501280. Its totient is φ = 528521968.

The previous prime is 540011617. The next prime is 540011627. The reversal of 540011623 is 326110045.

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 540011623 - 2⁹ = 540011111 is a prime.

It is a super-2 number, since 2×540011623² = 583225105950188258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540011594 and 540011603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540011627) 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, 5744758 + ... + 5744851.

It is an arithmetic number, because the mean of its divisors is an integer number (137875320).

Almost surely, 2^540011623 is an apocalyptic number.

540011623 is a deficient number, since it is larger than the sum of its proper divisors (11489657).

540011623 is a wasteful number, since it uses less digits than its factorization.

540011623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11489656.

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

The square root of 540011623 is about 23238.1501630401. The cubic root of 540011623 is about 814.3311274691.

Adding to 540011623 its reverse (326110045), we get a palindrome (866121668).

The spelling of 540011623 in words is "five hundred forty million, eleven thousand, six hundred twenty-three".