47128297 has 2 divisors, whose sum is σ = 47128298. Its totient is φ = 47128296.

The previous prime is 47128283. The next prime is 47128321. The reversal of 47128297 is 79282174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31573161 + 15555136 = 5619^2 + 3944^2 .

It is a cyclic number.

It is not a de Polignac number, because 47128297 - 2¹¹ = 47126249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47128397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23564148 + 23564149.

It is an arithmetic number, because the mean of its divisors is an integer number (23564149).

Almost surely, 2^47128297 is an apocalyptic number.

It is an amenable number.

47128297 is a deficient number, since it is larger than the sum of its proper divisors (1).

47128297 is an equidigital number, since it uses as much as digits as its factorization.

47128297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 47128297 is about 6865.0052439893. The cubic root of 47128297 is about 361.2106795803.

The spelling of 47128297 in words is "forty-seven million, one hundred twenty-eight thousand, two hundred ninety-seven".