51382843 has 2 divisors, whose sum is σ = 51382844. Its totient is φ = 51382842.

The previous prime is 51382829. The next prime is 51382853. The reversal of 51382843 is 34828315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51382843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51382799 and 51382808.

It is not a weakly prime, because it can be changed into another prime (51382813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25691421 + 25691422.

It is an arithmetic number, because the mean of its divisors is an integer number (25691422).

Almost surely, 2^51382843 is an apocalyptic number.

51382843 is a deficient number, since it is larger than the sum of its proper divisors (1).

51382843 is an equidigital number, since it uses as much as digits as its factorization.

51382843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 51382843 is about 7168.1826846140. The cubic root of 51382843 is about 371.7686034437.

It can be divided in two parts, 51382 and 843, that added together give a palindrome (52225).

The spelling of 51382843 in words is "fifty-one million, three hundred eighty-two thousand, eight hundred forty-three".