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2152085 = 513113293
BaseRepresentation
bin1000001101011010010101
311001100002212
420031122111
51022331320
6114043205
724202205
oct10153225
94040085
102152085
11123a991
12879505
135a4730
14400405
152c79c5
hex20d695

2152085 has 16 divisors (see below), whose sum is σ = 2815344. Its totient is φ = 1569792.

The previous prime is 2152079. The next prime is 2152093. The reversal of 2152085 is 5802512.

It can be written as a sum of positive squares in 8 ways, for example, as 208849 + 1943236 = 457^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152085 - 24 = 2152069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2152085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7199 + ... + 7491.

It is an arithmetic number, because the mean of its divisors is an integer number (175959).

22152085 is an apocalyptic number.

It is an amenable number.

2152085 is a deficient number, since it is larger than the sum of its proper divisors (663259).

2152085 is a wasteful number, since it uses less digits than its factorization.

2152085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2152085 is about 1466.9986366728. The cubic root of 2152085 is about 129.1079960160.

Adding to 2152085 its reverse (5802512), we get a palindrome (7954597).

The spelling of 2152085 in words is "two million, one hundred fifty-two thousand, eighty-five".

Divisors: 1 5 13 65 113 293 565 1465 1469 3809 7345 19045 33109 165545 430417 2152085