Search a number
-
+
544270081 = 2131325537
BaseRepresentation
bin100000011100001…
…110011100000001
31101221010210012011
4200130032130001
52103313120311
6130001332521
716326135145
oct4034163401
91357123164
10544270081
1125a254193
12132337141
13889b5404
14523db225
1532bb0321
hex2070e701

544270081 has 4 divisors (see below), whose sum is σ = 544316932. Its totient is φ = 544223232.

The previous prime is 544270021. The next prime is 544270099. The reversal of 544270081 is 180072445.

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 can be written as a sum of positive squares in 2 ways, for example, as 362559681 + 181710400 = 19041^2 + 13480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-544270081 is a prime.

It is a super-2 number, since 2×5442700812 = 592459842143493122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544270021) 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, 8545 + ... + 34081.

It is an arithmetic number, because the mean of its divisors is an integer number (136079233).

Almost surely, 2544270081 is an apocalyptic number.

It is an amenable number.

544270081 is a deficient number, since it is larger than the sum of its proper divisors (46851).

544270081 is a wasteful number, since it uses less digits than its factorization.

544270081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46850.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 544270081 is about 23329.5966746106. The cubic root of 544270081 is about 816.4660933134.

The spelling of 544270081 in words is "five hundred forty-four million, two hundred seventy thousand, eighty-one".

Divisors: 1 21313 25537 544270081