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80525271 = 3411813617
BaseRepresentation
bin1001100110010…
…11011111010111
312121112002220110
410303023133113
5131103302041
611553534103
71665311361
oct463133727
9177462813
1080525271
11414aa912
1222b74333
13138b54b8
14a9a1d31
157109516
hex4ccb7d7

80525271 has 16 divisors (see below), whose sum is σ = 110623968. Its totient is φ = 52070400.

The previous prime is 80525267. The next prime is 80525273. The reversal of 80525271 is 17252508.

It is not a de Polignac number, because 80525271 - 22 = 80525267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80525273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20455 + ... + 24071.

It is an arithmetic number, because the mean of its divisors is an integer number (6913998).

Almost surely, 280525271 is an apocalyptic number.

80525271 is a deficient number, since it is larger than the sum of its proper divisors (30098697).

80525271 is a wasteful number, since it uses less digits than its factorization.

80525271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 80525271 is about 8973.5874097264. The cubic root of 80525271 is about 431.8279332320.

Adding to 80525271 its reverse (17252508), we get a palindrome (97777779).

The spelling of 80525271 in words is "eighty million, five hundred twenty-five thousand, two hundred seventy-one".

Divisors: 1 3 41 123 181 543 3617 7421 10851 22263 148297 444891 654677 1964031 26841757 80525271