Search a number
-
+
5447 = 13419
BaseRepresentation
bin1010101000111
321110202
41111013
5133242
641115
721611
oct12507
97422
105447
114102
12319b
132630
141db1
151932
hex1547

5447 has 4 divisors (see below), whose sum is σ = 5880. Its totient is φ = 5016.

The previous prime is 5443. The next prime is 5449. The reversal of 5447 is 7445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7445 = 51489.

It is a cyclic number.

It is not a de Polignac number, because 5447 - 22 = 5443 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197 + ... + 222.

It is an arithmetic number, because the mean of its divisors is an integer number (1470).

25447 is an apocalyptic number.

5447 is a deficient number, since it is larger than the sum of its proper divisors (433).

5447 is a wasteful number, since it uses less digits than its factorization.

5447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its digits is 560, while the sum is 20.

The square root of 5447 is about 73.8037939404. The cubic root of 5447 is about 17.5948590357.

It can be divided in two parts, 54 and 47, that added together give a palindrome (101).

The spelling of 5447 in words is "five thousand, four hundred forty-seven".

Divisors: 1 13 419 5447