51304471 has 2 divisors, whose sum is σ = 51304472. Its totient is φ = 51304470.

The previous prime is 51304441. The next prime is 51304481. The reversal of 51304471 is 17440315.

51304471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51304471 - 2¹¹ = 51302423 is a prime.

It is a super-3 number, since 3×51304471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51304441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25652235 + 25652236.

It is an arithmetic number, because the mean of its divisors is an integer number (25652236).

Almost surely, 2^51304471 is an apocalyptic number.

51304471 is a deficient number, since it is larger than the sum of its proper divisors (1).

51304471 is an equidigital number, since it uses as much as digits as its factorization.

51304471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 51304471 is about 7162.7139409584. The cubic root of 51304471 is about 371.5794931411.

Adding to 51304471 its reverse (17440315), we get a palindrome (68744786).

The spelling of 51304471 in words is "fifty-one million, three hundred four thousand, four hundred seventy-one".