51323443 has 2 divisors, whose sum is σ = 51323444. Its totient is φ = 51323442.

The previous prime is 51323423. The next prime is 51323449. The reversal of 51323443 is 34432315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51323443 - 2¹⁷ = 51192371 is a prime.

It is not a weakly prime, because it can be changed into another prime (51323449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25661721 + 25661722.

It is an arithmetic number, because the mean of its divisors is an integer number (25661722).

Almost surely, 2^51323443 is an apocalyptic number.

51323443 is a deficient number, since it is larger than the sum of its proper divisors (1).

51323443 is an equidigital number, since it uses as much as digits as its factorization.

51323443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 25.

The square root of 51323443 is about 7164.0381768944. The cubic root of 51323443 is about 371.6252899123.

Adding to 51323443 its reverse (34432315), we get a palindrome (85755758).

The spelling of 51323443 in words is "fifty-one million, three hundred twenty-three thousand, four hundred forty-three".