47316021 has 8 divisors (see below), whose sum is σ = 63570144. Its totient is φ = 31302960.

The previous prime is 47316011. The next prime is 47316029. The reversal of 47316021 is 12061374.

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

It is not a de Polignac number, because 47316021 - 2⁹ = 47315509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47315982 and 47316000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47316029) 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, 59806 + ... + 60591.

It is an arithmetic number, because the mean of its divisors is an integer number (7946268).

Almost surely, 2^47316021 is an apocalyptic number.

It is an amenable number.

47316021 is a deficient number, since it is larger than the sum of its proper divisors (16254123).

47316021 is a wasteful number, since it uses less digits than its factorization.

47316021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120531.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 47316021 is about 6878.6641871805. The cubic root of 47316021 is about 361.6896422175.

Adding to 47316021 its reverse (12061374), we get a palindrome (59377395).

The spelling of 47316021 in words is "forty-seven million, three hundred sixteen thousand, twenty-one".