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2133145 = 57591033
BaseRepresentation
bin1000001000110010011001
311000101010101
420020302121
51021230040
6113415401
724063040
oct10106231
94011111
102133145
111227733
1286a561
13598c21
143d7557
152c209a
hex208c99

2133145 has 16 divisors (see below), whose sum is σ = 2977920. Its totient is φ = 1436544.

The previous prime is 2133137. The next prime is 2133151. The reversal of 2133145 is 5413312.

2133145 = T24 + T25 + ... + T233.

2133145 is a nontrivial binomial coefficient, being equal to C(2066, 2).

It is a cyclic number.

It is not a de Polignac number, because 2133145 - 23 = 2133137 is a prime.

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, 1549 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (186120).

22133145 is an apocalyptic number.

2133145 is the 2065-th triangular number and also the 1033-rd hexagonal number.

2133145 is the 689-th centered nonagonal number.

It is an amenable number.

2133145 is a deficient number, since it is larger than the sum of its proper divisors (844775).

2133145 is a wasteful number, since it uses less digits than its factorization.

2133145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 360, while the sum is 19.

The square root of 2133145 is about 1460.5290137481. The cubic root of 2133145 is about 128.7281296311.

Adding to 2133145 its reverse (5413312), we get a palindrome (7546457).

It can be divided in two parts, 2133 and 145, that added together give a triangular number (2278 = T67).

The spelling of 2133145 in words is "two million, one hundred thirty-three thousand, one hundred forty-five".

Divisors: 1 5 7 35 59 295 413 1033 2065 5165 7231 36155 60947 304735 426629 2133145