47247321 has 8 divisors (see below), whose sum is σ = 68723424. Its totient is φ = 28634720.

The previous prime is 47247311. The next prime is 47247329. The reversal of 47247321 is 12374274.

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

It is a cyclic number.

It is not a de Polignac number, because 47247321 - 2⁵ = 47247289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47247329) 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, 715836 + ... + 715901.

It is an arithmetic number, because the mean of its divisors is an integer number (8590428).

Almost surely, 2^47247321 is an apocalyptic number.

It is an amenable number.

47247321 is a deficient number, since it is larger than the sum of its proper divisors (21476103).

47247321 is a wasteful number, since it uses less digits than its factorization.

47247321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431751.

The product of its digits is 9408, while the sum is 30.

The square root of 47247321 is about 6873.6686710955. The cubic root of 47247321 is about 361.5145069351.

The spelling of 47247321 in words is "forty-seven million, two hundred forty-seven thousand, three hundred twenty-one".