51894443 has 2 divisors, whose sum is σ = 51894444. Its totient is φ = 51894442.

The previous prime is 51894413. The next prime is 51894481. The reversal of 51894443 is 34449815.

It is an a-pointer prime, because the next prime (51894481) can be obtained adding 51894443 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51894443 - 2⁶ = 51894379 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51894397 and 51894406.

It is not a weakly prime, because it can be changed into another prime (51894413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25947221 + 25947222.

It is an arithmetic number, because the mean of its divisors is an integer number (25947222).

Almost surely, 2^51894443 is an apocalyptic number.

51894443 is a deficient number, since it is larger than the sum of its proper divisors (1).

51894443 is an equidigital number, since it uses as much as digits as its factorization.

51894443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 51894443 is about 7203.7797717587. The cubic root of 51894443 is about 372.9983851847.

The spelling of 51894443 in words is "fifty-one million, eight hundred ninety-four thousand, four hundred forty-three".