47247247 has 2 divisors, whose sum is σ = 47247248. Its totient is φ = 47247246.

The previous prime is 47247223. The next prime is 47247251. The reversal of 47247247 is 74274274.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47247247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47247217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23623623 + 23623624.

It is an arithmetic number, because the mean of its divisors is an integer number (23623624).

Almost surely, 2^47247247 is an apocalyptic number.

47247247 is a deficient number, since it is larger than the sum of its proper divisors (1).

47247247 is an equidigital number, since it uses as much as digits as its factorization.

47247247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87808, while the sum is 37.

The square root of 47247247 is about 6873.6632882328. The cubic root of 47247247 is about 361.5143181972.

The spelling of 47247247 in words is "forty-seven million, two hundred forty-seven thousand, two hundred forty-seven".