51748943 has 2 divisors, whose sum is σ = 51748944. Its totient is φ = 51748942.

The previous prime is 51748937. The next prime is 51748973. The reversal of 51748943 is 34984715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51748943 - 2⁸ = 51748687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51748943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51748973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25874471 + 25874472.

It is an arithmetic number, because the mean of its divisors is an integer number (25874472).

Almost surely, 2^51748943 is an apocalyptic number.

51748943 is a deficient number, since it is larger than the sum of its proper divisors (1).

51748943 is an equidigital number, since it uses as much as digits as its factorization.

51748943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 51748943 is about 7193.6738180154. The cubic root of 51748943 is about 372.6494585148.

The spelling of 51748943 in words is "fifty-one million, seven hundred forty-eight thousand, nine hundred forty-three".