53242224421 has 2 divisors, whose sum is σ = 53242224422. Its totient is φ = 53242224420.

The previous prime is 53242224419. The next prime is 53242224499. The reversal of 53242224421 is 12442224235.

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., 49290216196 + 3952008225 = 222014^2 + 62865^2 .

It is a cyclic number.

It is not a de Polignac number, because 53242224421 - 2¹ = 53242224419 is a prime.

It is a super-2 number, since 2×53242224421² (a number of 22 digits) contains 22 as substring.

Together with 53242224419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53242227421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26621112210 + 26621112211.

It is an arithmetic number, because the mean of its divisors is an integer number (26621112211).

Almost surely, 2^53242224421 is an apocalyptic number.

It is an amenable number.

53242224421 is a deficient number, since it is larger than the sum of its proper divisors (1).

53242224421 is an equidigital number, since it uses as much as digits as its factorization.

53242224421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 31.

Adding to 53242224421 its reverse (12442224235), we get a palindrome (65684448656).

The spelling of 53242224421 in words is "fifty-three billion, two hundred forty-two million, two hundred twenty-four thousand, four hundred twenty-one".