52447247 has 2 divisors, whose sum is σ = 52447248. Its totient is φ = 52447246.

The previous prime is 52447243. The next prime is 52447249. The reversal of 52447247 is 74274425.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52447247 - 2² = 52447243 is a prime.

Together with 52447249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52447243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26223623 + 26223624.

It is an arithmetic number, because the mean of its divisors is an integer number (26223624).

Almost surely, 2^52447247 is an apocalyptic number.

52447247 is a deficient number, since it is larger than the sum of its proper divisors (1).

52447247 is an equidigital number, since it uses as much as digits as its factorization.

52447247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 35.

The square root of 52447247 is about 7242.0471553284. The cubic root of 52447247 is about 374.3181613037.

The spelling of 52447247 in words is "fifty-two million, four hundred forty-seven thousand, two hundred forty-seven".