47417021 has 2 divisors, whose sum is σ = 47417022. Its totient is φ = 47417020.

The previous prime is 47417009. The next prime is 47417057. The reversal of 47417021 is 12071474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47416996 + 25 = 6886^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 47417021 - 2¹⁴ = 47400637 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47417081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23708510 + 23708511.

It is an arithmetic number, because the mean of its divisors is an integer number (23708511).

Almost surely, 2^47417021 is an apocalyptic number.

It is an amenable number.

47417021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47417021 is an equidigital number, since it uses as much as digits as its factorization.

47417021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 47417021 is about 6886.0018152771. The cubic root of 47417021 is about 361.9468115743.

Adding to 47417021 its reverse (12071474), we get a palindrome (59488495).

The spelling of 47417021 in words is "forty-seven million, four hundred seventeen thousand, twenty-one".