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80917075 = 523236683
BaseRepresentation
bin1001101001010…
…11001001010011
312122021000100201
410310223021103
5131203321300
612010200031
72001532561
oct464531123
9178230321
1080917075
1141748218
1223123017
13139c1935
14aa64a31
15718566a
hex4d2b253

80917075 has 6 divisors (see below), whose sum is σ = 100337204. Its totient is φ = 64733640.

The previous prime is 80917063. The next prime is 80917079. The reversal of 80917075 is 57071908.

It is not a de Polignac number, because 80917075 - 217 = 80786003 is a prime.

It is a super-3 number, since 3×809170753 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80917079) 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 5 ways as a sum of consecutive naturals, for example, 1618317 + ... + 1618366.

Almost surely, 280917075 is an apocalyptic number.

80917075 is a deficient number, since it is larger than the sum of its proper divisors (19420129).

80917075 is a wasteful number, since it uses less digits than its factorization.

80917075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236693 (or 3236688 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 80917075 is about 8995.3918758440. The cubic root of 80917075 is about 432.5271681509.

The spelling of 80917075 in words is "eighty million, nine hundred seventeen thousand, seventy-five".

Divisors: 1 5 25 3236683 16183415 80917075