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2081125 = 5316649
BaseRepresentation
bin111111100000101100101
310220201202201
413330011211
51013044000
6112334501
723455264
oct7740545
93821681
102081125
1111a1642
12844431
1357b347
143c25db
152b196a
hex1fc165

2081125 has 8 divisors (see below), whose sum is σ = 2597400. Its totient is φ = 1664800.

The previous prime is 2081099. The next prime is 2081129. The reversal of 2081125 is 5211802.

It can be written as a sum of positive squares in 4 ways, for example, as 10404 + 2070721 = 102^2 + 1439^2 .

It is not a de Polignac number, because 2081125 - 213 = 2072933 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081129) 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, 8200 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (324675).

22081125 is an apocalyptic number.

2081125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2081125 is a deficient number, since it is larger than the sum of its proper divisors (516275).

2081125 is an equidigital number, since it uses as much as digits as its factorization.

2081125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664 (or 16654 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2081125 is about 1442.6104810378. The cubic root of 2081125 is about 127.6730956669.

Adding to 2081125 its reverse (5211802), we get a palindrome (7292927).

The spelling of 2081125 in words is "two million, eighty-one thousand, one hundred twenty-five".

Divisors: 1 5 25 125 16649 83245 416225 2081125