47917013 has 2 divisors, whose sum is σ = 47917014. Its totient is φ = 47917012.

The previous prime is 47916997. The next prime is 47917043. The reversal of 47917013 is 31071974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36881329 + 11035684 = 6073^2 + 3322^2 .

It is a cyclic number.

It is not a de Polignac number, because 47917013 - 2⁴ = 47916997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47917043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23958506 + 23958507.

It is an arithmetic number, because the mean of its divisors is an integer number (23958507).

Almost surely, 2^47917013 is an apocalyptic number.

It is an amenable number.

47917013 is a deficient number, since it is larger than the sum of its proper divisors (1).

47917013 is an equidigital number, since it uses as much as digits as its factorization.

47917013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 47917013 is about 6922.2115685668. The cubic root of 47917013 is about 363.2145569351.

Adding to 47917013 its reverse (31071974), we get a palindrome (78988987).

The spelling of 47917013 in words is "forty-seven million, nine hundred seventeen thousand, thirteen".