47432881 has 2 divisors, whose sum is σ = 47432882. Its totient is φ = 47432880.

The previous prime is 47432867. The next prime is 47432887. The reversal of 47432881 is 18823474.

47432881 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., 42771600 + 4661281 = 6540^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 47432881 - 2⁷ = 47432753 is a prime.

It is a super-2 number, since 2×47432881² = 4499756399920322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47432881.

It is not a weakly prime, because it can be changed into another prime (47432887) 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, 23716440 + 23716441.

It is an arithmetic number, because the mean of its divisors is an integer number (23716441).

Almost surely, 2^47432881 is an apocalyptic number.

It is an amenable number.

47432881 is a deficient number, since it is larger than the sum of its proper divisors (1).

47432881 is an equidigital number, since it uses as much as digits as its factorization.

47432881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 37.

The square root of 47432881 is about 6887.1533306585. The cubic root of 47432881 is about 361.9871616175.

The spelling of 47432881 in words is "forty-seven million, four hundred thirty-two thousand, eight hundred eighty-one".