50979979 has 2 divisors, whose sum is σ = 50979980. Its totient is φ = 50979978.

The previous prime is 50979977. The next prime is 50980003. The reversal of 50979979 is 97997905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50979979 - 2¹ = 50979977 is a prime.

Together with 50979977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (50979977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25489989 + 25489990.

It is an arithmetic number, because the mean of its divisors is an integer number (25489990).

Almost surely, 2^50979979 is an apocalyptic number.

50979979 is a deficient number, since it is larger than the sum of its proper divisors (1).

50979979 is an equidigital number, since it uses as much as digits as its factorization.

50979979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1607445, while the sum is 55.

The square root of 50979979 is about 7140.0265405669. The cubic root of 50979979 is about 370.7944434690.

The spelling of 50979979 in words is "fifty million, nine hundred seventy-nine thousand, nine hundred seventy-nine".