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82055471 = 1929148921
BaseRepresentation
bin1001110010000…
…01000100101111
312201101211221112
410321001010233
5132001233341
612050422235
72014313531
oct471010457
9181354845
1082055471
1142355543
122359197b
1313cccb44
14ac7d851
15730caeb
hex4e4112f

82055471 has 8 divisors (see below), whose sum is σ = 89353200. Its totient is φ = 75055680.

The previous prime is 82055423. The next prime is 82055497. The reversal of 82055471 is 17455028.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-82055471 is a prime.

It is a super-3 number, since 3×820554713 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82055401) 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, 73910 + ... + 75011.

It is an arithmetic number, because the mean of its divisors is an integer number (11169150).

Almost surely, 282055471 is an apocalyptic number.

82055471 is a deficient number, since it is larger than the sum of its proper divisors (7297729).

82055471 is a wasteful number, since it uses less digits than its factorization.

82055471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148969.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 82055471 is about 9058.4474939142. The cubic root of 82055471 is about 434.5460910204.

The spelling of 82055471 in words is "eighty-two million, fifty-five thousand, four hundred seventy-one".

Divisors: 1 19 29 551 148921 2829499 4318709 82055471