52223457421 has 2 divisors, whose sum is σ = 52223457422. Its totient is φ = 52223457420.

The previous prime is 52223457401. The next prime is 52223457427. The reversal of 52223457421 is 12475432225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46671121225 + 5552336196 = 216035^2 + 74514^2 .

It is a cyclic number.

It is not a de Polignac number, because 52223457421 - 2¹¹ = 52223455373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52223457427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26111728710 + 26111728711.

It is an arithmetic number, because the mean of its divisors is an integer number (26111728711).

Almost surely, 2^52223457421 is an apocalyptic number.

It is an amenable number.

52223457421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52223457421 is an equidigital number, since it uses as much as digits as its factorization.

52223457421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 37.

Adding to 52223457421 its reverse (12475432225), we get a palindrome (64698889646).

It can be divided in two parts, 5222 and 3457421, that added together give a palindrome (3462643).

The spelling of 52223457421 in words is "fifty-two billion, two hundred twenty-three million, four hundred fifty-seven thousand, four hundred twenty-one".