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80485 = 516097
BaseRepresentation
bin10011101001100101
311002101221
4103221211
510033420
61420341
7453436
oct235145
9132357
1080485
1155519
123a6b1
132a832
142148d
1518caa
hex13a65

80485 has 4 divisors (see below), whose sum is σ = 96588. Its totient is φ = 64384.

The previous prime is 80473. The next prime is 80489. The reversal of 80485 is 58408.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37636 + 42849 = 194^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 80485 - 29 = 79973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80489) 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, 8044 + ... + 8053.

It is an arithmetic number, because the mean of its divisors is an integer number (24147).

280485 is an apocalyptic number.

It is an amenable number.

80485 is a deficient number, since it is larger than the sum of its proper divisors (16103).

80485 is a wasteful number, since it uses less digits than its factorization.

80485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16102.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 80485 is about 283.6987839241. The cubic root of 80485 is about 43.1755934954.

It can be divided in two parts, 80 and 485, that added together give a palindrome (565).

The spelling of 80485 in words is "eighty thousand, four hundred eighty-five".

Divisors: 1 5 16097 80485