51499379 has 2 divisors, whose sum is σ = 51499380. Its totient is φ = 51499378.

The previous prime is 51499351. The next prime is 51499381. The reversal of 51499379 is 97399415.

51499379 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-51499379 is a prime.

Together with 51499381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51499309) 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, 25749689 + 25749690.

It is an arithmetic number, because the mean of its divisors is an integer number (25749690).

Almost surely, 2^51499379 is an apocalyptic number.

51499379 is a deficient number, since it is larger than the sum of its proper divisors (1).

51499379 is an equidigital number, since it uses as much as digits as its factorization.

51499379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 51499379 is about 7176.3067799530. The cubic root of 51499379 is about 372.0494476028.

The spelling of 51499379 in words is "fifty-one million, four hundred ninety-nine thousand, three hundred seventy-nine".