51057173 has 2 divisors, whose sum is σ = 51057174. Its totient is φ = 51057172.

The previous prime is 51057163. The next prime is 51057191. The reversal of 51057173 is 37175015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34597924 + 16459249 = 5882^2 + 4057^2 .

It is a cyclic number.

It is not a de Polignac number, because 51057173 - 2⁴ = 51057157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51057113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25528586 + 25528587.

It is an arithmetic number, because the mean of its divisors is an integer number (25528587).

Almost surely, 2^51057173 is an apocalyptic number.

It is an amenable number.

51057173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51057173 is an equidigital number, since it uses as much as digits as its factorization.

51057173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 51057173 is about 7145.4302179785. The cubic root of 51057173 is about 370.9815016823.

The spelling of 51057173 in words is "fifty-one million, fifty-seven thousand, one hundred seventy-three".