540205553 has 2 divisors, whose sum is σ = 540205554. Its totient is φ = 540205552.

The previous prime is 540205543. The next prime is 540205573. The reversal of 540205553 is 355502045.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283821409 + 256384144 = 16847^2 + 16012^2 .

It is a cyclic number.

It is not a de Polignac number, because 540205553 - 2⁴ = 540205537 is a prime.

It is not a weakly prime, because it can be changed into another prime (540205543) 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, 270102776 + 270102777.

It is an arithmetic number, because the mean of its divisors is an integer number (270102777).

Almost surely, 2^540205553 is an apocalyptic number.

It is an amenable number.

540205553 is a deficient number, since it is larger than the sum of its proper divisors (1).

540205553 is an equidigital number, since it uses as much as digits as its factorization.

540205553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 540205553 is about 23242.3224528015. The cubic root of 540205553 is about 814.4285971828.

Adding to 540205553 its reverse (355502045), we get a palindrome (895707598).

The spelling of 540205553 in words is "five hundred forty million, two hundred five thousand, five hundred fifty-three".