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BaseRepresentation
bin111100101
3122222
413211
53420
62125
71262
oct745
9588
10485
11401
12345
132b4
14269
15225
hex1e5

485 has 4 divisors (see below), whose sum is σ = 588. Its totient is φ = 384.

The previous prime is 479. The next prime is 487. The reversal of 485 is 584.

It is a Cunningham number, because it is equal to 222+1.

485 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

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 196 + 289 = 14^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 485 - 26 = 421 is a prime.

It is a magnanimous number.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 3, base 9, base 12, base 14 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487) 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, 44 + ... + 53.

It is an arithmetic number, because the mean of its divisors is an integer number (147).

It is an amenable number.

485 is a deficient number, since it is larger than the sum of its proper divisors (103).

485 is an equidigital number, since it uses as much as digits as its factorization.

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

The sum of its prime factors is 102.

The product of its digits is 160, while the sum is 17.

The square root of 485 is about 22.0227155455. The cubic root of 485 is about 7.8568280078.

Subtracting from 485 its product of digits (160), we obtain a triangular number (325 = T25).

Subtracting 485 from its reverse (584), we obtain a palindrome (99).

The spelling of 485 in words is "four hundred eighty-five", and thus it is an aban number.

Divisors: 1 5 97 485