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80851253 = 737487641
BaseRepresentation
bin1001101000110…
…11000100110101
312122010200001212
410310123010311
5131144220003
612004531205
72001136640
oct464330465
9178120055
1080851253
114170281a
12230b0b05
131399a9a2
14aa48a57
157170dd8
hex4d1b135

80851253 has 16 divisors (see below), whose sum is σ = 95241984. Its totient is φ = 67184640.

The previous prime is 80851247. The next prime is 80851261. The reversal of 80851253 is 35215808.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80851253 - 210 = 80850229 is a prime.

It is a super-2 number, since 2×808512532 = 13073850223340018, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80851273) 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 15 ways as a sum of consecutive naturals, for example, 125813 + ... + 126453.

It is an arithmetic number, because the mean of its divisors is an integer number (5952624).

Almost surely, 280851253 is an apocalyptic number.

It is an amenable number.

80851253 is a deficient number, since it is larger than the sum of its proper divisors (14390731).

80851253 is a wasteful number, since it uses less digits than its factorization.

80851253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 80851253 is about 8991.7324804511. The cubic root of 80851253 is about 432.4098565850.

The spelling of 80851253 in words is "eighty million, eight hundred fifty-one thousand, two hundred fifty-three".

Divisors: 1 7 37 259 487 641 3409 4487 18019 23717 126133 166019 312167 2185169 11550179 80851253