51152173 has 2 divisors, whose sum is σ = 51152174. Its totient is φ = 51152172.

The previous prime is 51152159. The next prime is 51152177. The reversal of 51152173 is 37125115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50879689 + 272484 = 7133^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 51152173 - 2¹⁷ = 51021101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51152177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25576086 + 25576087.

It is an arithmetic number, because the mean of its divisors is an integer number (25576087).

Almost surely, 2^51152173 is an apocalyptic number.

It is an amenable number.

51152173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51152173 is an equidigital number, since it uses as much as digits as its factorization.

51152173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 25.

The square root of 51152173 is about 7152.0747339496. The cubic root of 51152173 is about 371.2114491745.

Adding to 51152173 its reverse (37125115), we get a palindrome (88277288).

The spelling of 51152173 in words is "fifty-one million, one hundred fifty-two thousand, one hundred seventy-three".