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52087161 = 372931289
BaseRepresentation
bin1100011010110…
…0100101111001
310122000022011010
43012230211321
5101313242121
65100224133
71201506420
oct306544571
9118008133
1052087161
1127446945
121553b049
13aa39409
146cbc2b7
15488d376
hex31ac979

52087161 has 48 divisors (see below), whose sum is σ = 85795200. Its totient is φ = 27498240.

The previous prime is 52087141. The next prime is 52087163. The reversal of 52087161 is 16178025.

It is not a de Polignac number, because 52087161 - 29 = 52086649 is a prime.

52087161 is a modest number, since divided by 7161 gives 5208 as remainder.

It is not an unprimeable number, because it can be changed into a prime (52087163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 585205 + ... + 585293.

It is an arithmetic number, because the mean of its divisors is an integer number (1787400).

Almost surely, 252087161 is an apocalyptic number.

It is an amenable number.

52087161 is a deficient number, since it is larger than the sum of its proper divisors (33708039).

52087161 is a wasteful number, since it uses less digits than its factorization.

52087161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 52087161 is about 7217.1435485239. The cubic root of 52087161 is about 373.4595437616.

The spelling of 52087161 in words is "fifty-two million, eighty-seven thousand, one hundred sixty-one".

Divisors: 1 3 7 21 29 31 87 89 93 203 217 267 609 623 651 899 961 1869 2581 2697 2759 2883 6293 6727 7743 8277 18067 18879 19313 20181 27869 54201 57939 80011 83607 85529 195083 240033 256587 560077 585249 598703 1680231 1796109 2480341 7441023 17362387 52087161