51039173 has 2 divisors, whose sum is σ = 51039174. Its totient is φ = 51039172.

The previous prime is 51039103. The next prime is 51039179. The reversal of 51039173 is 37193015.

51039173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50225569 + 813604 = 7087^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 51039173 - 2¹⁸ = 50777029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51039179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25519586 + 25519587.

It is an arithmetic number, because the mean of its divisors is an integer number (25519587).

Almost surely, 2^51039173 is an apocalyptic number.

It is an amenable number.

51039173 is a deficient number, since it is larger than the sum of its proper divisors (1).

51039173 is an equidigital number, since it uses as much as digits as its factorization.

51039173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 51039173 is about 7144.1705606739. The cubic root of 51039173 is about 370.9379005484.

The spelling of 51039173 in words is "fifty-one million, thirty-nine thousand, one hundred seventy-three".