47444521 has 2 divisors, whose sum is σ = 47444522. Its totient is φ = 47444520.

The previous prime is 47444497. The next prime is 47444531. The reversal of 47444521 is 12544474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 7502121 = 6320^2 + 2739^2 .

It is a cyclic number.

It is not a de Polignac number, because 47444521 - 2⁵ = 47444489 is a prime.

It is not a weakly prime, because it can be changed into another prime (47444531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23722260 + 23722261.

It is an arithmetic number, because the mean of its divisors is an integer number (23722261).

Almost surely, 2^47444521 is an apocalyptic number.

It is an amenable number.

47444521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47444521 is an equidigital number, since it uses as much as digits as its factorization.

47444521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 31.

The square root of 47444521 is about 6887.9983304295. The cubic root of 47444521 is about 362.0167696717.

Adding to 47444521 its reverse (12544474), we get a palindrome (59988995).

The spelling of 47444521 in words is "forty-seven million, four hundred forty-four thousand, five hundred twenty-one".