51095173 has 2 divisors, whose sum is σ = 51095174. Its totient is φ = 51095172.

The previous prime is 51095171. The next prime is 51095201. The reversal of 51095173 is 37159015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50936769 + 158404 = 7137^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 51095173 - 2¹ = 51095171 is a prime.

It is a super-2 number, since 2×51095173² = 5221433407799858, which contains 22 as substring.

Together with 51095171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51095171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25547586 + 25547587.

It is an arithmetic number, because the mean of its divisors is an integer number (25547587).

Almost surely, 2^51095173 is an apocalyptic number.

It is an amenable number.

51095173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51095173 is an equidigital number, since it uses as much as digits as its factorization.

51095173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 51095173 is about 7148.0887655373. The cubic root of 51095173 is about 371.0735148792.

The spelling of 51095173 in words is "fifty-one million, ninety-five thousand, one hundred seventy-three".