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505506 = 23173487
BaseRepresentation
bin1111011011010100010
3221200102110
41323122202
5112134011
614500150
74203531
oct1733242
9850373
10505506
11315881
12204656
13149121
14d2318
159eba6
hex7b6a2

505506 has 16 divisors (see below), whose sum is σ = 1018944. Its totient is φ = 167184.

The previous prime is 505501. The next prime is 505511. The reversal of 505506 is 605505.

505506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (505501) and next prime (505511).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505501) by changing a digit.

505506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (63684).

2505506 is an apocalyptic number.

505506 is an abundant number, since it is smaller than the sum of its proper divisors (513438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505506 is a wasteful number, since it uses less digits than its factorization.

505506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 505506 is about 710.9894513985. The cubic root of 505506 is about 79.6603306839.

Subtracting 505506 from its reverse (605505), we obtain a palindrome (99999).

The spelling of 505506 in words is "five hundred five thousand, five hundred six".

Divisors: 1 2 3 6 173 346 487 519 974 1038 1461 2922 84251 168502 252753 505506