50172173 has 2 divisors, whose sum is σ = 50172174. Its totient is φ = 50172172.

The previous prime is 50172169. The next prime is 50172181. The reversal of 50172173 is 37127105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48135844 + 2036329 = 6938^2 + 1427^2 .

It is a cyclic number.

It is not a de Polignac number, because 50172173 - 2² = 50172169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50172163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25086086 + 25086087.

It is an arithmetic number, because the mean of its divisors is an integer number (25086087).

Almost surely, 2^50172173 is an apocalyptic number.

It is an amenable number.

50172173 is a deficient number, since it is larger than the sum of its proper divisors (1).

50172173 is an equidigital number, since it uses as much as digits as its factorization.

50172173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 50172173 is about 7083.2318188804. The cubic root of 50172173 is about 368.8255259262.

Adding to 50172173 its reverse (37127105), we get a palindrome (87299278).

The spelling of 50172173 in words is "fifty million, one hundred seventy-two thousand, one hundred seventy-three".