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83084251 = 376122091
BaseRepresentation
bin1001111001111…
…00001111011011
312210100010011111
410330330033123
5132232144001
612124441151
72026130065
oct474741733
9183303144
1083084251
1142998478
12239a91b7
13142a01a3
14b06a735
157462851
hex4f3c3db

83084251 has 4 divisors (see below), whose sum is σ = 83110104. Its totient is φ = 83058400.

The previous prime is 83084237. The next prime is 83084273. The reversal of 83084251 is 15248038.

It is a semiprime because it is the product of two primes.

It is a 5-Lehmer number, since φ(83084251) divides (83084251-1)5.

It is a cyclic number.

It is not a de Polignac number, because 83084251 - 29 = 83083739 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83084201) 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 3 ways as a sum of consecutive naturals, for example, 7285 + ... + 14806.

It is an arithmetic number, because the mean of its divisors is an integer number (20777526).

Almost surely, 283084251 is an apocalyptic number.

83084251 is a deficient number, since it is larger than the sum of its proper divisors (25853).

83084251 is a wasteful number, since it uses less digits than its factorization.

83084251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25852.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 83084251 is about 9115.0562806820. The cubic root of 83084251 is about 436.3546111362.

The spelling of 83084251 in words is "eighty-three million, eighty-four thousand, two hundred fifty-one".

Divisors: 1 3761 22091 83084251