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80055985 = 5234116979
BaseRepresentation
bin1001100010110…
…00111010110001
312120122021011111
410301120322301
5130443242420
611535513321
71661315242
oct461307261
9176567144
1080055985
114120a279
1222988841
131377ca09
14a8bccc9
15706545a
hex4c58eb1

80055985 has 16 divisors (see below), whose sum is σ = 102695040. Its totient is φ = 59762560.

The previous prime is 80055977. The next prime is 80056003. The reversal of 80055985 is 58955008.

It is not a de Polignac number, because 80055985 - 23 = 80055977 is a prime.

It is an unprimeable number.

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, 3775 + ... + 13204.

It is an arithmetic number, because the mean of its divisors is an integer number (6418440).

Almost surely, 280055985 is an apocalyptic number.

It is an amenable number.

80055985 is a deficient number, since it is larger than the sum of its proper divisors (22639055).

80055985 is a wasteful number, since it uses less digits than its factorization.

80055985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17048.

The product of its (nonzero) digits is 72000, while the sum is 40.

The square root of 80055985 is about 8947.4010192905. The cubic root of 80055985 is about 430.9874279238.

The spelling of 80055985 in words is "eighty million, fifty-five thousand, nine hundred eighty-five".

Divisors: 1 5 23 41 115 205 943 4715 16979 84895 390517 696139 1952585 3480695 16011197 80055985