51363173 has 2 divisors, whose sum is σ = 51363174. Its totient is φ = 51363172.

The previous prime is 51363161. The next prime is 51363197. The reversal of 51363173 is 37136315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36747844 + 14615329 = 6062^2 + 3823^2 .

It is a cyclic number.

It is not a de Polignac number, because 51363173 - 2⁸ = 51362917 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 (51363073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25681586 + 25681587.

It is an arithmetic number, because the mean of its divisors is an integer number (25681587).

Almost surely, 2^51363173 is an apocalyptic number.

It is an amenable number.

51363173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51363173 is an equidigital number, since it uses as much as digits as its factorization.

51363173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 29.

The square root of 51363173 is about 7166.8105179361. The cubic root of 51363173 is about 371.7211581531.

Adding to 51363173 its reverse (37136315), we get a palindrome (88499488).

The spelling of 51363173 in words is "fifty-one million, three hundred sixty-three thousand, one hundred seventy-three".