51004279 has 2 divisors, whose sum is σ = 51004280. Its totient is φ = 51004278.

The previous prime is 51004277. The next prime is 51004309. The reversal of 51004279 is 97240015.

It is a happy number.

51004279 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 not a de Polignac number, because 51004279 - 2¹ = 51004277 is a prime.

Together with 51004277, 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 (51004277) 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, 25502139 + 25502140.

It is an arithmetic number, because the mean of its divisors is an integer number (25502140).

Almost surely, 2^51004279 is an apocalyptic number.

51004279 is a deficient number, since it is larger than the sum of its proper divisors (1).

51004279 is an equidigital number, since it uses as much as digits as its factorization.

51004279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 51004279 is about 7141.7280121830. The cubic root of 51004279 is about 370.8533481209.

The spelling of 51004279 in words is "fifty-one million, four thousand, two hundred seventy-nine".