51422407 has 2 divisors, whose sum is σ = 51422408. Its totient is φ = 51422406.

The previous prime is 51422377. The next prime is 51422419. The reversal of 51422407 is 70422415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51422407 - 2²³ = 43033799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51422447) 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, 25711203 + 25711204.

It is an arithmetic number, because the mean of its divisors is an integer number (25711204).

Almost surely, 2^51422407 is an apocalyptic number.

51422407 is a deficient number, since it is larger than the sum of its proper divisors (1).

51422407 is an equidigital number, since it uses as much as digits as its factorization.

51422407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 51422407 is about 7170.9418488787. The cubic root of 51422407 is about 371.8639976690.

The spelling of 51422407 in words is "fifty-one million, four hundred twenty-two thousand, four hundred seven".