51938279 has 2 divisors, whose sum is σ = 51938280. Its totient is φ = 51938278.

The previous prime is 51938273. The next prime is 51938287. The reversal of 51938279 is 97283915.

51938279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51938279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51938273) 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, 25969139 + 25969140.

It is an arithmetic number, because the mean of its divisors is an integer number (25969140).

Almost surely, 2^51938279 is an apocalyptic number.

51938279 is a deficient number, since it is larger than the sum of its proper divisors (1).

51938279 is an equidigital number, since it uses as much as digits as its factorization.

51938279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 51938279 is about 7206.8216989183. The cubic root of 51938279 is about 373.1033813687.

The spelling of 51938279 in words is "fifty-one million, nine hundred thirty-eight thousand, two hundred seventy-nine".