47417521 has 8 divisors (see below), whose sum is σ = 50168000. Its totient is φ = 44692560.

The previous prime is 47417497. The next prime is 47417567. The reversal of 47417521 is 12571474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47417521 - 2⁹ = 47417009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47417021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2490 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (6271000).

Almost surely, 2^47417521 is an apocalyptic number.

It is an amenable number.

47417521 is a deficient number, since it is larger than the sum of its proper divisors (2750479).

47417521 is a wasteful number, since it uses less digits than its factorization.

47417521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12759.

The product of its digits is 7840, while the sum is 31.

The square root of 47417521 is about 6886.0381207193. The cubic root of 47417521 is about 361.9480837811.

Adding to 47417521 its reverse (12571474), we get a palindrome (59988995).

The spelling of 47417521 in words is "forty-seven million, four hundred seventeen thousand, five hundred twenty-one".