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441140521 = 1553284057
BaseRepresentation
bin11010010010110…
…100010100101001
31010202002021000211
4122102310110221
51400412444041
6111435101121
713634426653
oct3222642451
91122067024
10441140521
11207015448
121038a17a1
13705172c3
14428336d3
1528add481
hex1a4b4529

441140521 has 4 divisors (see below), whose sum is σ = 441426132. Its totient is φ = 440854912.

The previous prime is 441140519. The next prime is 441140527. The reversal of 441140521 is 125041144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62410000 + 378730521 = 7900^2 + 19461^2 .

It is a cyclic number.

It is not a de Polignac number, because 441140521 - 21 = 441140519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441140492 and 441140501.

It is not an unprimeable number, because it can be changed into a prime (441140527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140476 + ... + 143581.

It is an arithmetic number, because the mean of its divisors is an integer number (110356533).

Almost surely, 2441140521 is an apocalyptic number.

It is an amenable number.

441140521 is a deficient number, since it is larger than the sum of its proper divisors (285611).

441140521 is a wasteful number, since it uses less digits than its factorization.

441140521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285610.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 441140521 is about 21003.3454716148. The cubic root of 441140521 is about 761.2470989596.

Adding to 441140521 its reverse (125041144), we get a palindrome (566181665).

The spelling of 441140521 in words is "four hundred forty-one million, one hundred forty thousand, five hundred twenty-one".

Divisors: 1 1553 284057 441140521