53110442321 has 2 divisors, whose sum is σ = 53110442322. Its totient is φ = 53110442320.

The previous prime is 53110442309. The next prime is 53110442347. The reversal of 53110442321 is 12324401135.

It is a happy number.

It is an a-pointer prime, because the next prime (53110442347) can be obtained adding 53110442321 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44062627921 + 9047814400 = 209911^2 + 95120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53110442321 is a prime.

It is not a weakly prime, because it can be changed into another prime (53110442921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26555221160 + 26555221161.

It is an arithmetic number, because the mean of its divisors is an integer number (26555221161).

Almost surely, 2^53110442321 is an apocalyptic number.

It is an amenable number.

53110442321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53110442321 is an equidigital number, since it uses as much as digits as its factorization.

53110442321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 53110442321 its reverse (12324401135), we get a palindrome (65434843456).

The spelling of 53110442321 in words is "fifty-three billion, one hundred ten million, four hundred forty-two thousand, three hundred twenty-one".