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80853321 = 326951107
BaseRepresentation
bin1001101000110…
…11100101001001
312122010202220110
410310123211021
5131144301241
612004544533
72001145653
oct464334511
9178122813
1080853321
114170432a
12230b2149
131399b903
14aa496d3
157171816
hex4d1b949

80853321 has 4 divisors (see below), whose sum is σ = 107804432. Its totient is φ = 53902212.

The previous prime is 80853319. The next prime is 80853323. The reversal of 80853321 is 12335808.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (80853319) and next prime (80853323).

It is not a de Polignac number, because 80853321 - 21 = 80853319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80853323) 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, 13475551 + ... + 13475556.

It is an arithmetic number, because the mean of its divisors is an integer number (26951108).

Almost surely, 280853321 is an apocalyptic number.

It is an amenable number.

80853321 is a deficient number, since it is larger than the sum of its proper divisors (26951111).

80853321 is a wasteful number, since it uses less digits than its factorization.

80853321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26951110.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 80853321 is about 8991.8474742402. The cubic root of 80853321 is about 432.4135432562.

The spelling of 80853321 in words is "eighty million, eight hundred fifty-three thousand, three hundred twenty-one".

Divisors: 1 3 26951107 80853321