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8053221 = 311277881
BaseRepresentation
bin11110101110000111100101
3120011010221110
4132232013211
54030200341
6444335233
7125310531
oct36560745
916133843
108053221
114600560
122844519
13188c727
1410d8bc1
15a91216
hex7ae1e5

8053221 has 16 divisors (see below), whose sum is σ = 11769408. Its totient is φ = 4857600.

The previous prime is 8053219. The next prime is 8053249. The reversal of 8053221 is 1223508.

It is not a de Polignac number, because 8053221 - 21 = 8053219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8053021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8701 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (735588).

Almost surely, 28053221 is an apocalyptic number.

It is an amenable number.

8053221 is a deficient number, since it is larger than the sum of its proper divisors (3716187).

8053221 is a wasteful number, since it uses less digits than its factorization.

8053221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 8053221 is about 2837.8197617185. The cubic root of 8053221 is about 200.4425284540.

Adding to 8053221 its reverse (1223508), we get a palindrome (9276729).

It can be divided in two parts, 80 and 53221, that added together give a triangular number (53301 = T326).

The spelling of 8053221 in words is "eight million, fifty-three thousand, two hundred twenty-one".

Divisors: 1 3 11 33 277 831 881 2643 3047 9141 9691 29073 244037 732111 2684407 8053221