47506021 has 2 divisors, whose sum is σ = 47506022. Its totient is φ = 47506020.

The previous prime is 47506009. The next prime is 47506027. The reversal of 47506021 is 12060574.

47506021 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., 37957921 + 9548100 = 6161^2 + 3090^2 .

It is a cyclic number.

It is not a de Polignac number, because 47506021 - 2⁷ = 47505893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47506027) 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, 23753010 + 23753011.

It is an arithmetic number, because the mean of its divisors is an integer number (23753011).

Almost surely, 2^47506021 is an apocalyptic number.

It is an amenable number.

47506021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47506021 is an equidigital number, since it uses as much as digits as its factorization.

47506021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 47506021 is about 6892.4611714539. The cubic root of 47506021 is about 362.1731236466.

Adding to 47506021 its reverse (12060574), we get a palindrome (59566595).

The spelling of 47506021 in words is "forty-seven million, five hundred six thousand, twenty-one".