47317549 has 2 divisors, whose sum is σ = 47317550. Its totient is φ = 47317548.

The previous prime is 47317547. The next prime is 47317559. The reversal of 47317549 is 94571374.

47317549 is nontrivially palindromic in base 5.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34140649 + 13176900 = 5843^2 + 3630^2 .

It is a cyclic number.

It is not a de Polignac number, because 47317549 - 2¹ = 47317547 is a prime.

Together with 47317547, 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 (47317547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23658774 + 23658775.

It is an arithmetic number, because the mean of its divisors is an integer number (23658775).

Almost surely, 2^47317549 is an apocalyptic number.

It is an amenable number.

47317549 is a deficient number, since it is larger than the sum of its proper divisors (1).

47317549 is an equidigital number, since it uses as much as digits as its factorization.

47317549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 47317549 is about 6878.7752543603. The cubic root of 47317549 is about 361.6935355839.

The spelling of 47317549 in words is "forty-seven million, three hundred seventeen thousand, five hundred forty-nine".