47242777 has 2 divisors, whose sum is σ = 47242778. Its totient is φ = 47242776.

The previous prime is 47242771. The next prime is 47242781. The reversal of 47242777 is 77724274.

It is a happy number.

47242777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25190361 + 22052416 = 5019^2 + 4696^2 .

It is a cyclic number.

It is not a de Polignac number, because 47242777 - 2²³ = 38854169 is a prime.

It is not a weakly prime, because it can be changed into another prime (47242771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23621388 + 23621389.

It is an arithmetic number, because the mean of its divisors is an integer number (23621389).

Almost surely, 2^47242777 is an apocalyptic number.

It is an amenable number.

47242777 is a deficient number, since it is larger than the sum of its proper divisors (1).

47242777 is an equidigital number, since it uses as much as digits as its factorization.

47242777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153664, while the sum is 40.

The square root of 47242777 is about 6873.3381264128. The cubic root of 47242777 is about 361.5029170393.

The spelling of 47242777 in words is "forty-seven million, two hundred forty-two thousand, seven hundred seventy-seven".