50815979 has 2 divisors, whose sum is σ = 50815980. Its totient is φ = 50815978.

The previous prime is 50815969. The next prime is 50815991. The reversal of 50815979 is 97951805.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50815979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50815969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25407989 + 25407990.

It is an arithmetic number, because the mean of its divisors is an integer number (25407990).

Almost surely, 2^50815979 is an apocalyptic number.

50815979 is a deficient number, since it is larger than the sum of its proper divisors (1).

50815979 is an equidigital number, since it uses as much as digits as its factorization.

50815979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 50815979 is about 7128.5327382288. The cubic root of 50815979 is about 370.3964073865.

The spelling of 50815979 in words is "fifty million, eight hundred fifteen thousand, nine hundred seventy-nine".