53259564173 has 2 divisors, whose sum is σ = 53259564174. Its totient is φ = 53259564172.

The previous prime is 53259564157. The next prime is 53259564181. The reversal of 53259564173 is 37146595235.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43448067364 + 9811496809 = 208442^2 + 99053^2 .

It is a cyclic number.

It is not a de Polignac number, because 53259564173 - 2⁴ = 53259564157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53259567173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26629782086 + 26629782087.

It is an arithmetic number, because the mean of its divisors is an integer number (26629782087).

Almost surely, 2^53259564173 is an apocalyptic number.

It is an amenable number.

53259564173 is a deficient number, since it is larger than the sum of its proper divisors (1).

53259564173 is an equidigital number, since it uses as much as digits as its factorization.

53259564173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 50.

The spelling of 53259564173 in words is "fifty-three billion, two hundred fifty-nine million, five hundred sixty-four thousand, one hundred seventy-three".