50778147 has 8 divisors (see below), whose sum is σ = 77376256. Its totient is φ = 29016072.

The previous prime is 50778139. The next prime is 50778151. The reversal of 50778147 is 74187705.

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

It is not a de Polignac number, because 50778147 - 2³ = 50778139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50778347) 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, 1208983 + ... + 1209024.

It is an arithmetic number, because the mean of its divisors is an integer number (9672032).

Almost surely, 2^50778147 is an apocalyptic number.

50778147 is a deficient number, since it is larger than the sum of its proper divisors (26598109).

50778147 is a wasteful number, since it uses less digits than its factorization.

50778147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418017.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 50778147 is about 7125.8786826608. The cubic root of 50778147 is about 370.3044657304.

The spelling of 50778147 in words is "fifty million, seven hundred seventy-eight thousand, one hundred forty-seven".