5420865221 has 2 divisors, whose sum is σ = 5420865222. Its totient is φ = 5420865220.

The previous prime is 5420865209. The next prime is 5420865337. The reversal of 5420865221 is 1225680245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3123580321 + 2297284900 = 55889^2 + 47930^2 .

It is a cyclic number.

It is not a de Polignac number, because 5420865221 - 2¹⁸ = 5420603077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5420865521) 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, 2710432610 + 2710432611.

It is an arithmetic number, because the mean of its divisors is an integer number (2710432611).

Almost surely, 2^5420865221 is an apocalyptic number.

It is an amenable number.

5420865221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5420865221 is an equidigital number, since it uses as much as digits as its factorization.

5420865221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 5420865221 is about 73626.5252541501. The cubic root of 5420865221 is about 1756.6673786594.

The spelling of 5420865221 in words is "five billion, four hundred twenty million, eight hundred sixty-five thousand, two hundred twenty-one".