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52187967 = 32131393209
BaseRepresentation
bin1100011100010…
…1001100111111
310122012102102200
43013011030333
5101330003332
65102322543
71202406336
oct307051477
9118172380
1052187967
1127505657
1215589453
13aa73270
146d06d1d
1548ad17c
hex31c533f

52187967 has 24 divisors (see below), whose sum is σ = 81790800. Its totient is φ = 31874688.

The previous prime is 52187929. The next prime is 52187999. The reversal of 52187967 is 76978125.

It is not a de Polignac number, because 52187967 - 26 = 52187903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52187917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14659 + ... + 17867.

It is an arithmetic number, because the mean of its divisors is an integer number (3407950).

Almost surely, 252187967 is an apocalyptic number.

52187967 is a deficient number, since it is larger than the sum of its proper divisors (29602833).

52187967 is a wasteful number, since it uses less digits than its factorization.

52187967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3364 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 52187967 is about 7224.1239607305. The cubic root of 52187967 is about 373.7003113625.

It can be divided in two parts, 521 and 87967, that added together give a palindrome (88488).

The spelling of 52187967 in words is "fifty-two million, one hundred eighty-seven thousand, nine hundred sixty-seven".

Divisors: 1 3 9 13 39 117 139 417 1251 1807 3209 5421 9627 16263 28881 41717 125151 375453 446051 1338153 4014459 5798663 17395989 52187967