51775679 has 2 divisors, whose sum is σ = 51775680. Its totient is φ = 51775678.

The previous prime is 51775667. The next prime is 51775681. The reversal of 51775679 is 97657715.

51775679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51775679 is a prime.

It is a super-2 number, since 2×51775679² = 5361441871822082, which contains 22 as substring.

Together with 51775681, 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 (51775609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25887839 + 25887840.

It is an arithmetic number, because the mean of its divisors is an integer number (25887840).

Almost surely, 2^51775679 is an apocalyptic number.

51775679 is a deficient number, since it is larger than the sum of its proper divisors (1).

51775679 is an equidigital number, since it uses as much as digits as its factorization.

51775679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 463050, while the sum is 47.

The square root of 51775679 is about 7195.5318774918. The cubic root of 51775679 is about 372.7136236939.

The spelling of 51775679 in words is "fifty-one million, seven hundred seventy-five thousand, six hundred seventy-nine".