53020044221 has 2 divisors, whose sum is σ = 53020044222. Its totient is φ = 53020044220.

The previous prime is 53020044197. The next prime is 53020044247. The reversal of 53020044221 is 12244002035.

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., 48285228121 + 4734816100 = 219739^2 + 68810^2 .

It is a cyclic number.

It is not a de Polignac number, because 53020044221 - 2³⁴ = 35840175037 is a prime.

It is a super-2 number, since 2×53020044221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53020043221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26510022110 + 26510022111.

It is an arithmetic number, because the mean of its divisors is an integer number (26510022111).

Almost surely, 2^53020044221 is an apocalyptic number.

It is an amenable number.

53020044221 is a deficient number, since it is larger than the sum of its proper divisors (1).

53020044221 is an equidigital number, since it uses as much as digits as its factorization.

53020044221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 53020044221 its reverse (12244002035), we get a palindrome (65264046256).

The spelling of 53020044221 in words is "fifty-three billion, twenty million, forty-four thousand, two hundred twenty-one".