47507189 has 2 divisors, whose sum is σ = 47507190. Its totient is φ = 47507188.

The previous prime is 47507179. The next prime is 47507209. The reversal of 47507189 is 98170574.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25959025 + 21548164 = 5095^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 47507189 - 2⁸ = 47506933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47507179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23753594 + 23753595.

It is an arithmetic number, because the mean of its divisors is an integer number (23753595).

Almost surely, 2^47507189 is an apocalyptic number.

It is an amenable number.

47507189 is a deficient number, since it is larger than the sum of its proper divisors (1).

47507189 is an equidigital number, since it uses as much as digits as its factorization.

47507189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 47507189 is about 6892.5459011892. The cubic root of 47507189 is about 362.1760917949.

The spelling of 47507189 in words is "forty-seven million, five hundred seven thousand, one hundred eighty-nine".