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2205291 = 311173931
BaseRepresentation
bin1000011010011001101011
311011001002110
420122121223
51031032131
6115133403
724513264
oct10323153
94131073
102205291
111276960
128a4263
135c2a0a
1441596b
152d8646
hex21a66b

2205291 has 16 divisors (see below), whose sum is σ = 3397248. Its totient is φ = 1257600.

The previous prime is 2205283. The next prime is 2205293. The reversal of 2205291 is 1925022.

2205291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2205291 - 23 = 2205283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1405 + ... + 2526.

It is an arithmetic number, because the mean of its divisors is an integer number (212328).

22205291 is an apocalyptic number.

2205291 is a deficient number, since it is larger than the sum of its proper divisors (1191957).

2205291 is a wasteful number, since it uses less digits than its factorization.

2205291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2205291 is about 1485.0222220560. The cubic root of 2205291 is about 130.1633252926.

The spelling of 2205291 in words is "two million, two hundred five thousand, two hundred ninety-one".

Divisors: 1 3 11 17 33 51 187 561 3931 11793 43241 66827 129723 200481 735097 2205291