47448257 has 2 divisors, whose sum is σ = 47448258. Its totient is φ = 47448256.

The previous prime is 47448253. The next prime is 47448281. The reversal of 47448257 is 75284474.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31798321 + 15649936 = 5639^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 47448257 - 2² = 47448253 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47448251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23724128 + 23724129.

It is an arithmetic number, because the mean of its divisors is an integer number (23724129).

Almost surely, 2^47448257 is an apocalyptic number.

It is an amenable number.

47448257 is a deficient number, since it is larger than the sum of its proper divisors (1).

47448257 is an equidigital number, since it uses as much as digits as its factorization.

47448257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 41.

The square root of 47448257 is about 6888.2695214401. The cubic root of 47448257 is about 362.0262717113.

The spelling of 47448257 in words is "forty-seven million, four hundred forty-eight thousand, two hundred fifty-seven".