51422471 has 2 divisors, whose sum is σ = 51422472. Its totient is φ = 51422470.

The previous prime is 51422447. The next prime is 51422477. The reversal of 51422471 is 17422415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51422471 - 2⁶ = 51422407 is a prime.

It is a super-3 number, since 3×51422471³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51422471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51422477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25711235 + 25711236.

It is an arithmetic number, because the mean of its divisors is an integer number (25711236).

Almost surely, 2^51422471 is an apocalyptic number.

51422471 is a deficient number, since it is larger than the sum of its proper divisors (1).

51422471 is an equidigital number, since it uses as much as digits as its factorization.

51422471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 51422471 is about 7170.9463113316. The cubic root of 51422471 is about 371.8641519421.

Adding to 51422471 its reverse (17422415), we get a palindrome (68844886).

The spelling of 51422471 in words is "fifty-one million, four hundred twenty-two thousand, four hundred seventy-one".