51014172173 has 2 divisors, whose sum is σ = 51014172174. Its totient is φ = 51014172172.

The previous prime is 51014172119. The next prime is 51014172211. The reversal of 51014172173 is 37127141015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37225071844 + 13789100329 = 192938^2 + 117427^2 .

It is a cyclic number.

It is not a de Polignac number, because 51014172173 - 2²⁰ = 51013123597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51014102173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25507086086 + 25507086087.

It is an arithmetic number, because the mean of its divisors is an integer number (25507086087).

Almost surely, 2^51014172173 is an apocalyptic number.

It is an amenable number.

51014172173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51014172173 is an equidigital number, since it uses as much as digits as its factorization.

51014172173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 32.

The spelling of 51014172173 in words is "fifty-one billion, fourteen million, one hundred seventy-two thousand, one hundred seventy-three".