2435540221 has 2 divisors, whose sum is σ = 2435540222. Its totient is φ = 2435540220.

The previous prime is 2435540183. The next prime is 2435540227. The reversal of 2435540221 is 1220455342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1350562500 + 1084977721 = 36750^2 + 32939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2435540221 - 2¹⁵ = 2435507453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2435540221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2435540227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1217770110 + 1217770111.

It is an arithmetic number, because the mean of its divisors is an integer number (1217770111).

Almost surely, 2^2435540221 is an apocalyptic number.

It is an amenable number.

2435540221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2435540221 is an equidigital number, since it uses as much as digits as its factorization.

2435540221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2435540221 is about 49351.1927008862. The cubic root of 2435540221 is about 1345.4423757326.

Adding to 2435540221 its reverse (1220455342), we get a palindrome (3655995563).

The spelling of 2435540221 in words is "two billion, four hundred thirty-five million, five hundred forty thousand, two hundred twenty-one".