52420523173 has 2 divisors, whose sum is σ = 52420523174. Its totient is φ = 52420523172.

The previous prime is 52420523161. The next prime is 52420523203. The reversal of 52420523173 is 37132502425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42204771844 + 10215751329 = 205438^2 + 101073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52420523173 is a prime.

It is a super-2 number, since 2×52420523173² (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 (52420523123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26210261586 + 26210261587.

It is an arithmetic number, because the mean of its divisors is an integer number (26210261587).

Almost surely, 2^52420523173 is an apocalyptic number.

It is an amenable number.

52420523173 is a deficient number, since it is larger than the sum of its proper divisors (1).

52420523173 is an equidigital number, since it uses as much as digits as its factorization.

52420523173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 52420523173 in words is "fifty-two billion, four hundred twenty million, five hundred twenty-three thousand, one hundred seventy-three".