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83272855 = 516654571
BaseRepresentation
bin1001111011010…
…10010010010111
312210200200212211
410331222102113
5132304212410
612132454251
72030544001
oct475522227
9183620784
1083272855
1143007146
1223a7a387
1314337ca3
14b0b9371
15749d68a
hex4f6a497

83272855 has 4 divisors (see below), whose sum is σ = 99927432. Its totient is φ = 66618280.

The previous prime is 83272853. The next prime is 83272859. The reversal of 83272855 is 55827238.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55827238 = 227913619.

It is not a de Polignac number, because 83272855 - 21 = 83272853 is a prime.

It is a super-3 number, since 3×832728553 (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83272853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8327281 + ... + 8327290.

It is an arithmetic number, because the mean of its divisors is an integer number (24981858).

Almost surely, 283272855 is an apocalyptic number.

83272855 is a deficient number, since it is larger than the sum of its proper divisors (16654577).

83272855 is a wasteful number, since it uses less digits than its factorization.

83272855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16654576.

The product of its digits is 134400, while the sum is 40.

The square root of 83272855 is about 9125.3961557841. The cubic root of 83272855 is about 436.6845414149.

The spelling of 83272855 in words is "eighty-three million, two hundred seventy-two thousand, eight hundred fifty-five".

Divisors: 1 5 16654571 83272855