47862721 has 2 divisors, whose sum is σ = 47862722. Its totient is φ = 47862720.

The previous prime is 47862709. The next prime is 47862739. The reversal of 47862721 is 12726874.

47862721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47114496 + 748225 = 6864^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 47862721 - 2¹³ = 47854529 is a prime.

It is not a weakly prime, because it can be changed into another prime (47862781) 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, 23931360 + 23931361.

It is an arithmetic number, because the mean of its divisors is an integer number (23931361).

Almost surely, 2^47862721 is an apocalyptic number.

It is an amenable number.

47862721 is a deficient number, since it is larger than the sum of its proper divisors (1).

47862721 is an equidigital number, since it uses as much as digits as its factorization.

47862721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 37.

The square root of 47862721 is about 6918.2888780391. The cubic root of 47862721 is about 363.0773259469.

The spelling of 47862721 in words is "forty-seven million, eight hundred sixty-two thousand, seven hundred twenty-one".