540111511 has 2 divisors, whose sum is σ = 540111512. Its totient is φ = 540111510.

The previous prime is 540111469. The next prime is 540111521. The reversal of 540111511 is 115111045.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 540111511 - 2²³ = 531722903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540111521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270055755 + 270055756.

It is an arithmetic number, because the mean of its divisors is an integer number (270055756).

Almost surely, 2^540111511 is an apocalyptic number.

540111511 is a deficient number, since it is larger than the sum of its proper divisors (1).

540111511 is an equidigital number, since it uses as much as digits as its factorization.

540111511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 540111511 is about 23240.2992880901. The cubic root of 540111511 is about 814.3813343470.

Adding to 540111511 its reverse (115111045), we get a palindrome (655222556).

The spelling of 540111511 in words is "five hundred forty million, one hundred eleven thousand, five hundred eleven".