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80095021 = 173653709
BaseRepresentation
bin1001100011000…
…10011100101101
312120201020201021
410301202130231
5131001020041
611540414141
71661540116
oct461423455
9176636637
1080095021
1141236636
12229a7351
1313794706
14a8cd20d
157071cd1
hex4c6272d

80095021 has 8 divisors (see below), whose sum is σ = 80795160. Its totient is φ = 79397952.

The previous prime is 80095009. The next prime is 80095033. The reversal of 80095021 is 12059008.

It is an interprime number because it is at equal distance from previous prime (80095009) and next prime (80095033).

It can be written as a sum of positive squares in 4 ways, for example, as 6375625 + 73719396 = 2525^2 + 8586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80095021 - 211 = 80092973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80095061) 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 7 ways as a sum of consecutive naturals, for example, 112615 + ... + 113323.

It is an arithmetic number, because the mean of its divisors is an integer number (10099395).

Almost surely, 280095021 is an apocalyptic number.

It is an amenable number.

80095021 is a deficient number, since it is larger than the sum of its proper divisors (700139).

80095021 is a wasteful number, since it uses less digits than its factorization.

80095021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 80095021 is about 8949.5821690177. The cubic root of 80095021 is about 431.0574676235.

The spelling of 80095021 in words is "eighty million, ninety-five thousand, twenty-one".

Divisors: 1 173 653 709 112969 122657 462977 80095021