Search a number
-
+
8054221 = 71150603
BaseRepresentation
bin11110101110010111001101
3120011012022111
4132232113031
54030213341
6444344021
7125313460
oct36562715
916135274
108054221
11460128a
122845011
131890016
1410d92d7
15a91681
hex7ae5cd

8054221 has 4 divisors (see below), whose sum is σ = 9204832. Its totient is φ = 6903612.

The previous prime is 8054191. The next prime is 8054231. The reversal of 8054221 is 1224508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8054221 - 211 = 8052173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8054192 and 8054201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8054231) 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, 575295 + ... + 575308.

It is an arithmetic number, because the mean of its divisors is an integer number (2301208).

Almost surely, 28054221 is an apocalyptic number.

It is an amenable number.

8054221 is a deficient number, since it is larger than the sum of its proper divisors (1150611).

8054221 is a wasteful number, since it uses less digits than its factorization.

8054221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150610.

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

The square root of 8054221 is about 2837.9959478477. The cubic root of 8054221 is about 200.4508246886.

Adding to 8054221 its reverse (1224508), we get a palindrome (9278729).

The spelling of 8054221 in words is "eight million, fifty-four thousand, two hundred twenty-one".

Divisors: 1 7 1150603 8054221