47073121 has 2 divisors, whose sum is σ = 47073122. Its totient is φ = 47073120.

The previous prime is 47073113. The next prime is 47073137. The reversal of 47073121 is 12137074.

It is a happy number.

47073121 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., 46730896 + 342225 = 6836^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 47073121 - 2³ = 47073113 is a prime.

It is not a weakly prime, because it can be changed into another prime (47073821) 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, 23536560 + 23536561.

It is an arithmetic number, because the mean of its divisors is an integer number (23536561).

Almost surely, 2^47073121 is an apocalyptic number.

It is an amenable number.

47073121 is a deficient number, since it is larger than the sum of its proper divisors (1).

47073121 is an equidigital number, since it uses as much as digits as its factorization.

47073121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 47073121 is about 6860.9854248497. The cubic root of 47073121 is about 361.0696606694.

The spelling of 47073121 in words is "forty-seven million, seventy-three thousand, one hundred twenty-one".