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505501 is a prime number
BaseRepresentation
bin1111011011010011101
3221200102021
41323122131
5112134001
614500141
74203523
oct1733235
9850367
10505501
11315877
12204651
13149119
14d2313
159eba1
hex7b69d

505501 has 2 divisors, whose sum is σ = 505502. Its totient is φ = 505500.

The previous prime is 505493. The next prime is 505511. The reversal of 505501 is 105505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488601 + 16900 = 699^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 505501 - 23 = 505493 is a prime.

It is a super-2 number, since 2×5055012 = 511062522002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505511) by changing a digit.

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 as a sum of consecutive naturals, namely, 252750 + 252751.

It is an arithmetic number, because the mean of its divisors is an integer number (252751).

2505501 is an apocalyptic number.

It is an amenable number.

505501 is a deficient number, since it is larger than the sum of its proper divisors (1).

505501 is an equidigital number, since it uses as much as digits as its factorization.

505501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 505501 is about 710.9859351633. The cubic root of 505501 is about 79.6600680408.

The spelling of 505501 in words is "five hundred five thousand, five hundred one".