47321971 has 4 divisors (see below), whose sum is σ = 49379472. Its totient is φ = 45264472.

The previous prime is 47321941. The next prime is 47321983. The reversal of 47321971 is 17912374.

47321971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47321971 - 2⁷ = 47321843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47321921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028716 + ... + 1028761.

It is an arithmetic number, because the mean of its divisors is an integer number (12344868).

Almost surely, 2^47321971 is an apocalyptic number.

47321971 is a deficient number, since it is larger than the sum of its proper divisors (2057501).

47321971 is a wasteful number, since it uses less digits than its factorization.

47321971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057500.

The product of its digits is 10584, while the sum is 34.

The square root of 47321971 is about 6879.0966703485. The cubic root of 47321971 is about 361.7048024326.

The spelling of 47321971 in words is "forty-seven million, three hundred twenty-one thousand, nine hundred seventy-one".