51043273 has 2 divisors, whose sum is σ = 51043274. Its totient is φ = 51043272.

The previous prime is 51043271. The next prime is 51043327. The reversal of 51043273 is 37234015.

Together with next prime (51043327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43930384 + 7112889 = 6628^2 + 2667^2 .

It is a cyclic number.

It is not a de Polignac number, because 51043273 - 2¹ = 51043271 is a prime.

Together with 51043271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51043271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25521636 + 25521637.

It is an arithmetic number, because the mean of its divisors is an integer number (25521637).

Almost surely, 2^51043273 is an apocalyptic number.

It is an amenable number.

51043273 is a deficient number, since it is larger than the sum of its proper divisors (1).

51043273 is an equidigital number, since it uses as much as digits as its factorization.

51043273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 51043273 is about 7144.4575021481. The cubic root of 51043273 is about 370.9478328192.

Adding to 51043273 its reverse (37234015), we get a palindrome (88277288).

The spelling of 51043273 in words is "fifty-one million, forty-three thousand, two hundred seventy-three".