47110021 has 12 divisors (see below), whose sum is σ = 54980832. Its totient is φ = 40365612.

The previous prime is 47110013. The next prime is 47110031. The reversal of 47110021 is 12001174.

It is not a de Polignac number, because 47110021 - 2³ = 47110013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47109977 and 47110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47110001) 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, 15406 + ... + 18208.

It is an arithmetic number, because the mean of its divisors is an integer number (4581736).

Almost surely, 2^47110021 is an apocalyptic number.

It is an amenable number.

47110021 is a deficient number, since it is larger than the sum of its proper divisors (7870811).

47110021 is an frugal number, since it uses more digits than its factorization.

47110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 47110021 is about 6863.6740161520. The cubic root of 47110021 is about 361.1639819462.

Adding to 47110021 its reverse (12001174), we get a palindrome (59111195).

The spelling of 47110021 in words is "forty-seven million, one hundred ten thousand, twenty-one".