47778051 has 16 divisors (see below), whose sum is σ = 66080160. Its totient is φ = 30706592.

The previous prime is 47778047. The next prime is 47778089. The reversal of 47778051 is 15087774.

It is not a de Polignac number, because 47778051 - 2² = 47778047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47778001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72841 + ... + 73493.

It is an arithmetic number, because the mean of its divisors is an integer number (4130010).

Almost surely, 2^47778051 is an apocalyptic number.

47778051 is a deficient number, since it is larger than the sum of its proper divisors (18302109).

47778051 is an frugal number, since it uses more digits than its factorization.

47778051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 685 counting only the distinct ones).

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

The square root of 47778051 is about 6912.1668816660. The cubic root of 47778051 is about 362.8631028385.

The spelling of 47778051 in words is "forty-seven million, seven hundred seventy-eight thousand, fifty-one".