51392447 has 2 divisors, whose sum is σ = 51392448. Its totient is φ = 51392446.

The previous prime is 51392387. The next prime is 51392449. The reversal of 51392447 is 74429315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51392447 - 2⁸ = 51392191 is a prime.

Together with 51392449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51392449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25696223 + 25696224.

It is an arithmetic number, because the mean of its divisors is an integer number (25696224).

Almost surely, 2^51392447 is an apocalyptic number.

51392447 is a deficient number, since it is larger than the sum of its proper divisors (1).

51392447 is an equidigital number, since it uses as much as digits as its factorization.

51392447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 51392447 is about 7168.8525581156. The cubic root of 51392447 is about 371.7917645032.

The spelling of 51392447 in words is "fifty-one million, three hundred ninety-two thousand, four hundred forty-seven".