50778899 has 8 divisors (see below), whose sum is σ = 52715520. Its totient is φ = 48861000.

The previous prime is 50778877. The next prime is 50778919. The reversal of 50778899 is 99887705.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50778899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50778899.

It is not an unprimeable number, because it can be changed into a prime (50778839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974 + ... + 10124.

It is an arithmetic number, because the mean of its divisors is an integer number (6589440).

Almost surely, 2^50778899 is an apocalyptic number.

50778899 is a deficient number, since it is larger than the sum of its proper divisors (1936621).

50778899 is a wasteful number, since it uses less digits than its factorization.

50778899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 50778899 is about 7125.9314478881. The cubic root of 50778899 is about 370.3062937319.

The spelling of 50778899 in words is "fifty million, seven hundred seventy-eight thousand, eight hundred ninety-nine".