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275516137 = 1321630273
BaseRepresentation
bin10000011011000…
…000101011101001
3201012102200002101
4100123000223221
51031013004022
643201133401
76553564021
oct2033005351
9635380071
10275516137
11131581396
127832a261
1345107800
142883ca81
15192c4627
hex106c0ae9

275516137 has 6 divisors (see below), whose sum is σ = 298340142. Its totient is φ = 254322432.

The previous prime is 275516117. The next prime is 275516141. The reversal of 275516137 is 731615572.

It can be written as a sum of positive squares in 3 ways, for example, as 17464041 + 258052096 = 4179^2 + 16064^2 .

It is not a de Polignac number, because 275516137 - 27 = 275516009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 275516096 and 275516105.

It is not an unprimeable number, because it can be changed into a prime (275516107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 814968 + ... + 815305.

It is an arithmetic number, because the mean of its divisors is an integer number (49723357).

Almost surely, 2275516137 is an apocalyptic number.

It is an amenable number.

275516137 is a deficient number, since it is larger than the sum of its proper divisors (22824005).

275516137 is a wasteful number, since it uses less digits than its factorization.

275516137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630299 (or 1630286 counting only the distinct ones).

The product of its digits is 44100, while the sum is 37.

The square root of 275516137 is about 16598.6787727216. The cubic root of 275516137 is about 650.7023075689.

It can be divided in two parts, 275516 and 137, that added together give a triangular number (275653 = T742).

The spelling of 275516137 in words is "two hundred seventy-five million, five hundred sixteen thousand, one hundred thirty-seven".

Divisors: 1 13 169 1630273 21193549 275516137