50978819 has 2 divisors, whose sum is σ = 50978820. Its totient is φ = 50978818.

The previous prime is 50978813. The next prime is 50978857. The reversal of 50978819 is 91887905.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50978819 - 2¹² = 50974723 is a prime.

It is a super-2 number, since 2×50978819² = 5197679973269522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50978813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25489409 + 25489410.

It is an arithmetic number, because the mean of its divisors is an integer number (25489410).

Almost surely, 2^50978819 is an apocalyptic number.

50978819 is a deficient number, since it is larger than the sum of its proper divisors (1).

50978819 is an equidigital number, since it uses as much as digits as its factorization.

50978819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 50978819 is about 7139.9453079138. The cubic root of 50978819 is about 370.7916310916.

The spelling of 50978819 in words is "fifty million, nine hundred seventy-eight thousand, eight hundred nineteen".