50879813 has 2 divisors, whose sum is σ = 50879814. Its totient is φ = 50879812.

The previous prime is 50879809. The next prime is 50879821. The reversal of 50879813 is 31897805.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36264484 + 14615329 = 6022^2 + 3823^2 .

It is a cyclic number.

It is not a de Polignac number, because 50879813 - 2² = 50879809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50879863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25439906 + 25439907.

It is an arithmetic number, because the mean of its divisors is an integer number (25439907).

Almost surely, 2^50879813 is an apocalyptic number.

It is an amenable number.

50879813 is a deficient number, since it is larger than the sum of its proper divisors (1).

50879813 is an equidigital number, since it uses as much as digits as its factorization.

50879813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 50879813 is about 7133.0086919897. The cubic root of 50879813 is about 370.5514373024.

The spelling of 50879813 in words is "fifty million, eight hundred seventy-nine thousand, eight hundred thirteen".