47008521 has 12 divisors (see below), whose sum is σ = 77601472. Its totient is φ = 26861976.

The previous prime is 47008517. The next prime is 47008543. The reversal of 47008521 is 12580074.

It is not a de Polignac number, because 47008521 - 2² = 47008517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47008501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373021 + ... + 373146.

Almost surely, 2^47008521 is an apocalyptic number.

It is an amenable number.

47008521 is a deficient number, since it is larger than the sum of its proper divisors (30592951).

47008521 is a wasteful number, since it uses less digits than its factorization.

47008521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746180 (or 746177 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 47008521 is about 6856.2760300326. The cubic root of 47008521 is about 360.9044157790.

Adding to 47008521 its reverse (12580074), we get a palindrome (59588595).

The spelling of 47008521 in words is "forty-seven million, eight thousand, five hundred twenty-one".