51267779 has 2 divisors, whose sum is σ = 51267780. Its totient is φ = 51267778.

The previous prime is 51267673. The next prime is 51267791. The reversal of 51267779 is 97776215.

51267779 is nontrivially palindromic in base 8.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51267779 - 2¹² = 51263683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51267079) 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, 25633889 + 25633890.

It is an arithmetic number, because the mean of its divisors is an integer number (25633890).

Almost surely, 2^51267779 is an apocalyptic number.

51267779 is a deficient number, since it is larger than the sum of its proper divisors (1).

51267779 is an equidigital number, since it uses as much as digits as its factorization.

51267779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 44.

The square root of 51267779 is about 7160.1521631876. The cubic root of 51267779 is about 371.4908897761.

The spelling of 51267779 in words is "fifty-one million, two hundred sixty-seven thousand, seven hundred seventy-nine".