47854861 has 2 divisors, whose sum is σ = 47854862. Its totient is φ = 47854860.

The previous prime is 47854823. The next prime is 47854871. The reversal of 47854861 is 16845874.

47854861 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., 47817225 + 37636 = 6915^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 47854861 - 2⁷ = 47854733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47854871) 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, 23927430 + 23927431.

It is an arithmetic number, because the mean of its divisors is an integer number (23927431).

Almost surely, 2^47854861 is an apocalyptic number.

It is an amenable number.

47854861 is a deficient number, since it is larger than the sum of its proper divisors (1).

47854861 is an equidigital number, since it uses as much as digits as its factorization.

47854861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 47854861 is about 6917.7207951752. The cubic root of 47854861 is about 363.0574500466.

The spelling of 47854861 in words is "forty-seven million, eight hundred fifty-four thousand, eight hundred sixty-one".