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52188717 = 373180167
BaseRepresentation
bin1100011100010…
…1011000101101
310122012110110110
43013011120231
5101330014332
65102330233
71202411460
oct307053055
9118173413
1052188717
1127506179
1215589979
13aa736c9
146d072d7
1548ad4cc
hex31c562d

52188717 has 16 divisors (see below), whose sum is σ = 82092032. Its totient is φ = 28859760.

The previous prime is 52188707. The next prime is 52188767. The reversal of 52188717 is 71788125.

52188717 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 52188717 - 24 = 52188701 is a prime.

It is a super-3 number, since 3×521887173 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52188707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39433 + ... + 40734.

It is an arithmetic number, because the mean of its divisors is an integer number (5130752).

Almost surely, 252188717 is an apocalyptic number.

It is an amenable number.

52188717 is a deficient number, since it is larger than the sum of its proper divisors (29903315).

52188717 is a wasteful number, since it uses less digits than its factorization.

52188717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80208.

The product of its digits is 31360, while the sum is 39.

The square root of 52188717 is about 7224.1758699522. The cubic root of 52188717 is about 373.7021015190.

The spelling of 52188717 in words is "fifty-two million, one hundred eighty-eight thousand, seven hundred seventeen".

Divisors: 1 3 7 21 31 93 217 651 80167 240501 561169 1683507 2485177 7455531 17396239 52188717