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80858453 = 1319731573
BaseRepresentation
bin1001101000111…
…00110101010101
312122011000221112
410310130311111
5131144432303
612005024405
72001166634
oct464346525
9178130845
1080858453
1141708175
12230b5105
13139a1050
14aa4b51b
1571730d8
hex4d1cd55

80858453 has 8 divisors (see below), whose sum is σ = 87523128. Its totient is φ = 74257344.

The previous prime is 80858423. The next prime is 80858483. The reversal of 80858453 is 35485808.

It is an interprime number because it is at equal distance from previous prime (80858423) and next prime (80858483).

It can be written as a sum of positive squares in 4 ways, for example, as 17783089 + 63075364 = 4217^2 + 7942^2 .

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 80858453 - 26 = 80858389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80858453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80858413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13226 + ... + 18347.

It is an arithmetic number, because the mean of its divisors is an integer number (10940391).

Almost surely, 280858453 is an apocalyptic number.

It is an amenable number.

80858453 is a deficient number, since it is larger than the sum of its proper divisors (6664675).

80858453 is a wasteful number, since it uses less digits than its factorization.

80858453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31783.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 80858453 is about 8992.1328393213. The cubic root of 80858453 is about 432.4226919191.

The spelling of 80858453 in words is "eighty million, eight hundred fifty-eight thousand, four hundred fifty-three".

Divisors: 1 13 197 2561 31573 410449 6219881 80858453