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49471 = 61811
BaseRepresentation
bin1100000100111111
32111212021
430010333
53040341
61021011
7264142
oct140477
974767
1049471
1134194
1224767
1319696
1414059
15e9d1
hexc13f

49471 has 4 divisors (see below), whose sum is σ = 50344. Its totient is φ = 48600.

The previous prime is 49463. The next prime is 49477. The reversal of 49471 is 17494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17494 = 28747.

It is a 5-Lehmer number, since φ(49471) divides (49471-1)5.

It is a cyclic number.

It is not a de Polignac number, because 49471 - 23 = 49463 is a prime.

It is a super-3 number, since 3×494713 = 363222984342333, which contains 333 as substring.

It is a Duffinian number.

49471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49477) 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, 345 + ... + 466.

It is an arithmetic number, because the mean of its divisors is an integer number (12586).

249471 is an apocalyptic number.

49471 is a deficient number, since it is larger than the sum of its proper divisors (873).

49471 is an equidigital number, since it uses as much as digits as its factorization.

49471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 1008, while the sum is 25.

The square root of 49471 is about 222.4207724112. The cubic root of 49471 is about 36.7099305663.

It can be divided in two parts, 494 and 71, that added together give a palindrome (565).

The spelling of 49471 in words is "forty-nine thousand, four hundred seventy-one".

Divisors: 1 61 811 49471