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44521 = 2112
BaseRepresentation
bin1010110111101001
32021001221
422313221
52411041
6542041
7243541
oct126751
967057
1044521
11304a4
1221921
1317359
1412321
15d2d1

44521 has 3 divisors (see below), whose sum is σ = 44733. Its totient is φ = 44310.

The previous prime is 44519. The next prime is 44531. The reversal of 44521 is 12544.

44521 = T210 + T211.

The square root of 44521 is 211.

It is a perfect power (a square), and thus also a powerful number.

44521 is nontrivially palindromic in base 14.

44521 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 44521 - 21 = 44519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44495 and 44504.

It is not an unprimeable number, because it can be changed into a prime (44501) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 106 + ... + 316.

It is an arithmetic number, because the mean of its divisors is an integer number (14911).

244521 is an apocalyptic number.

44521 is the 211-st square number.

44521 is the 106-th centered octagonal number.

It is an amenable number.

44521 is a deficient number, since it is larger than the sum of its proper divisors (212).

44521 is an frugal number, since it uses more digits than its factorization.

44521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 211 counting only the distinct ones).

The product of its digits is 160, while the sum is 16.

The cubic root of 44521 is about 35.4422787441.

Multiplying 44521 by its sum of digits (16), we get a square (712336 = 8442).

Multiplying 44521 by its reverse (12544), we get a square (558471424 = 236322).

It can be divided in two parts, 44 and 521, that added together give a palindrome (565).

The spelling of 44521 in words is "forty-four thousand, five hundred twenty-one".

Divisors: 1 211 44521