51988679 has 2 divisors, whose sum is σ = 51988680. Its totient is φ = 51988678.

The previous prime is 51988667. The next prime is 51988681. The reversal of 51988679 is 97688915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51988679 - 2⁸ = 51988423 is a prime.

Together with 51988681, it forms a pair of twin primes.

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 51988679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51988649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25994339 + 25994340.

It is an arithmetic number, because the mean of its divisors is an integer number (25994340).

Almost surely, 2^51988679 is an apocalyptic number.

51988679 is a deficient number, since it is larger than the sum of its proper divisors (1).

51988679 is an equidigital number, since it uses as much as digits as its factorization.

51988679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The square root of 51988679 is about 7210.3175380839. The cubic root of 51988679 is about 373.2240266909.

It can be divided in two parts, 519 and 88679, that added together give a palindrome (89198).

The spelling of 51988679 in words is "fifty-one million, nine hundred eighty-eight thousand, six hundred seventy-nine".