51122479 has 2 divisors, whose sum is σ = 51122480. Its totient is φ = 51122478.

The previous prime is 51122473. The next prime is 51122501. The reversal of 51122479 is 97422115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51122479 - 2³ = 51122471 is a prime.

It is a super-2 number, since 2×51122479² = 5227015718210882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51122479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51122471) 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, 25561239 + 25561240.

It is an arithmetic number, because the mean of its divisors is an integer number (25561240).

Almost surely, 2^51122479 is an apocalyptic number.

51122479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51122479 is an equidigital number, since it uses as much as digits as its factorization.

51122479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 51122479 is about 7149.9985314684. The cubic root of 51122479 is about 371.1396054598.

The spelling of 51122479 in words is "fifty-one million, one hundred twenty-two thousand, four hundred seventy-nine".