540220841 has 2 divisors, whose sum is σ = 540220842. Its totient is φ = 540220840.

The previous prime is 540220783. The next prime is 540220853. The reversal of 540220841 is 148022045.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390892441 + 149328400 = 19771^2 + 12220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540220841 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540220841.

It is not a weakly prime, because it can be changed into another prime (540220861) 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, 270110420 + 270110421.

It is an arithmetic number, because the mean of its divisors is an integer number (270110421).

Almost surely, 2^540220841 is an apocalyptic number.

It is an amenable number.

540220841 is a deficient number, since it is larger than the sum of its proper divisors (1).

540220841 is an equidigital number, since it uses as much as digits as its factorization.

540220841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 540220841 is about 23242.6513332709. The cubic root of 540220841 is about 814.4362799786.

Adding to 540220841 its reverse (148022045), we get a palindrome (688242886).

The spelling of 540220841 in words is "five hundred forty million, two hundred twenty thousand, eight hundred forty-one".