47252209 has 2 divisors, whose sum is σ = 47252210. Its totient is φ = 47252208.

The previous prime is 47252201. The next prime is 47252237. The reversal of 47252209 is 90225274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45158400 + 2093809 = 6720^2 + 1447^2 .

It is a cyclic number.

It is not a de Polignac number, because 47252209 - 2³ = 47252201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47252201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23626104 + 23626105.

It is an arithmetic number, because the mean of its divisors is an integer number (23626105).

Almost surely, 2^47252209 is an apocalyptic number.

It is an amenable number.

47252209 is a deficient number, since it is larger than the sum of its proper divisors (1).

47252209 is an equidigital number, since it uses as much as digits as its factorization.

47252209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 47252209 is about 6874.0242216623. The cubic root of 47252209 is about 361.5269734054.

The spelling of 47252209 in words is "forty-seven million, two hundred fifty-two thousand, two hundred nine".