51401443 has 2 divisors, whose sum is σ = 51401444. Its totient is φ = 51401442.

The previous prime is 51401423. The next prime is 51401447. The reversal of 51401443 is 34410415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51401443 - 2⁵ = 51401411 is a prime.

It is not a weakly prime, because it can be changed into another prime (51401447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25700721 + 25700722.

It is an arithmetic number, because the mean of its divisors is an integer number (25700722).

Almost surely, 2^51401443 is an apocalyptic number.

51401443 is a deficient number, since it is larger than the sum of its proper divisors (1).

51401443 is an equidigital number, since it uses as much as digits as its factorization.

51401443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 51401443 is about 7169.4799671943. The cubic root of 51401443 is about 371.8134566893.

Adding to 51401443 its reverse (34410415), we get a palindrome (85811858).

The spelling of 51401443 in words is "fifty-one million, four hundred one thousand, four hundred forty-three".