47720271 has 4 divisors (see below), whose sum is σ = 63627032. Its totient is φ = 31813512.

The previous prime is 47720261. The next prime is 47720273. The reversal of 47720271 is 17202774.

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

It is not a de Polignac number, because 47720271 - 2⁷ = 47720143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47720273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7953376 + ... + 7953381.

It is an arithmetic number, because the mean of its divisors is an integer number (15906758).

Almost surely, 2^47720271 is an apocalyptic number.

47720271 is a deficient number, since it is larger than the sum of its proper divisors (15906761).

47720271 is a wasteful number, since it uses less digits than its factorization.

47720271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906760.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 47720271 is about 6907.9860306749. The cubic root of 47720271 is about 362.7167686460.

The spelling of 47720271 in words is "forty-seven million, seven hundred twenty thousand, two hundred seventy-one".