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253089 = 3261461
BaseRepresentation
bin111101110010100001
3110212011200
4331302201
531044324
65231413
72102604
oct756241
9425150
10253089
11163171
12102569
138b275
146833b
154eec9
hex3dca1

253089 has 12 divisors (see below), whose sum is σ = 372372. Its totient is φ = 165600.

The previous prime is 253081. The next prime is 253103. The reversal of 253089 is 980352.

It can be written as a sum of positive squares in 2 ways, for example, as 36864 + 216225 = 192^2 + 465^2 .

It is not a de Polignac number, because 253089 - 23 = 253081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319 + ... + 779.

It is an arithmetic number, because the mean of its divisors is an integer number (31031).

2253089 is an apocalyptic number.

It is an amenable number.

253089 is a deficient number, since it is larger than the sum of its proper divisors (119283).

253089 is a wasteful number, since it uses less digits than its factorization.

253089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 253089 is about 503.0795165776. The cubic root of 253089 is about 63.2544508838.

Adding to 253089 its sum of digits (27), we get a triangular number (253116 = T711).

The spelling of 253089 in words is "two hundred fifty-three thousand, eighty-nine".

Divisors: 1 3 9 61 183 461 549 1383 4149 28121 84363 253089