52173109 has 2 divisors, whose sum is σ = 52173110. Its totient is φ = 52173108.

The previous prime is 52173091. The next prime is 52173133. The reversal of 52173109 is 90137125.

Together with previous prime (52173091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31606884 + 20566225 = 5622^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 52173109 - 2²³ = 43784501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52173139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26086554 + 26086555.

It is an arithmetic number, because the mean of its divisors is an integer number (26086555).

Almost surely, 2^52173109 is an apocalyptic number.

It is an amenable number.

52173109 is a deficient number, since it is larger than the sum of its proper divisors (1).

52173109 is an equidigital number, since it uses as much as digits as its factorization.

52173109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 52173109 is about 7223.0955275422. The cubic root of 52173109 is about 373.6648436320.

The spelling of 52173109 in words is "fifty-two million, one hundred seventy-three thousand, one hundred nine".