47338521 has 4 divisors (see below), whose sum is σ = 63118032. Its totient is φ = 31559012.

The previous prime is 47338517. The next prime is 47338547. The reversal of 47338521 is 12583374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47338521 - 2² = 47338517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47333521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7889751 + ... + 7889756.

It is an arithmetic number, because the mean of its divisors is an integer number (15779508).

Almost surely, 2^47338521 is an apocalyptic number.

It is an amenable number.

47338521 is a deficient number, since it is larger than the sum of its proper divisors (15779511).

47338521 is a wasteful number, since it uses less digits than its factorization.

47338521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15779510.

The product of its digits is 20160, while the sum is 33.

The square root of 47338521 is about 6880.2994847608. The cubic root of 47338521 is about 361.7469640800.

The spelling of 47338521 in words is "forty-seven million, three hundred thirty-eight thousand, five hundred twenty-one".