47757977 has 2 divisors, whose sum is σ = 47757978. Its totient is φ = 47757976.

The previous prime is 47757971. The next prime is 47758019. The reversal of 47757977 is 77975774.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43414921 + 4343056 = 6589^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 47757977 - 2⁴ = 47757961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47757971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23878988 + 23878989.

It is an arithmetic number, because the mean of its divisors is an integer number (23878989).

Almost surely, 2^47757977 is an apocalyptic number.

It is an amenable number.

47757977 is a deficient number, since it is larger than the sum of its proper divisors (1).

47757977 is an equidigital number, since it uses as much as digits as its factorization.

47757977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3025260, while the sum is 53.

The square root of 47757977 is about 6910.7146519011. The cubic root of 47757977 is about 362.8122766108.

The spelling of 47757977 in words is "forty-seven million, seven hundred fifty-seven thousand, nine hundred seventy-seven".