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491125 = 533929
BaseRepresentation
bin1110111111001110101
3220221200211
41313321311
5111204000
614305421
74113565
oct1677165
9827624
10491125
11305a98
121b8271
1314270b
14cada5
159a7ba
hex77e75

491125 has 8 divisors (see below), whose sum is σ = 613080. Its totient is φ = 392800.

The previous prime is 491083. The next prime is 491129. The reversal of 491125 is 521194.

It can be written as a sum of positive squares in 4 ways, for example, as 78961 + 412164 = 281^2 + 642^2 .

It is not a de Polignac number, because 491125 - 215 = 458357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491096 and 491105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1840 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (76635).

2491125 is an apocalyptic number.

It is an amenable number.

491125 is a deficient number, since it is larger than the sum of its proper divisors (121955).

491125 is an equidigital number, since it uses as much as digits as its factorization.

491125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944 (or 3934 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 491125 is about 700.8031107237. The cubic root of 491125 is about 78.8976402232.

It can be divided in two parts, 491 and 125, that added together give a palindrome (616).

The spelling of 491125 in words is "four hundred ninety-one thousand, one hundred twenty-five".

Divisors: 1 5 25 125 3929 19645 98225 491125