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47471 = 371283

47471 has 4 divisors (see below), whose sum is σ = 48792. Its totient is φ = 46152.

The previous prime is 47459. The next prime is 47491. The reversal of 47471 is 17474.

It can be divided in two parts, 474 and 71, that added together give a palindrome (545).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17474 = 28737.

It is a cyclic number.

It is not a de Polignac number, because 47471 - 26 = 47407 is a prime.

It is a super-3 number, since 3×474713 = 320927103204333, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 8 and base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605 + ... + 678.

It is an arithmetic number, because the mean of its divisors is an integer number (12198).

247471 is an apocalyptic number.

47471 is a deficient number, since it is larger than the sum of its proper divisors (1321).

47471 is a wasteful number, since it uses less digits than its factorization.

47471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its digits is 784, while the sum is 23.

The square root of 47471 is about 217.8784064564. The cubic root of 47471 is about 36.2084104874.

The spelling of 47471 in words is "forty-seven thousand, four hundred seventy-one", and thus it is an iban number.

Divisors: 1 37 1283 47471