47771471 has 4 divisors (see below), whose sum is σ = 52114344. Its totient is φ = 43428600.

The previous prime is 47771467. The next prime is 47771473. The reversal of 47771471 is 17417774.

It is a happy number.

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 47771471 - 2² = 47771467 is a prime.

It is a super-3 number, since 3×47771471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47771473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171420 + ... + 2171441.

It is an arithmetic number, because the mean of its divisors is an integer number (13028586).

Almost surely, 2^47771471 is an apocalyptic number.

47771471 is a deficient number, since it is larger than the sum of its proper divisors (4342873).

47771471 is a wasteful number, since it uses less digits than its factorization.

47771471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342872.

The product of its digits is 38416, while the sum is 38.

The square root of 47771471 is about 6911.6908929726. The cubic root of 47771471 is about 362.8464442210.

The spelling of 47771471 in words is "forty-seven million, seven hundred seventy-one thousand, four hundred seventy-one".