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52331111 = 7192571531
BaseRepresentation
bin1100011110100…
…0001001100111
310122110200210022
43013220021213
5101344043421
65105345355
71203543560
oct307501147
9118420708
1052331111
11275a3158
121563825b
13aac3471
146d43167
1548da7ab
hex31e8267

52331111 has 16 divisors (see below), whose sum is σ = 63240960. Its totient is φ = 42301440.

The previous prime is 52331099. The next prime is 52331113. The reversal of 52331111 is 11113325.

52331111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52331111 - 210 = 52330087 is a prime.

It is a super-3 number, since 3×523311113 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52331111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52331113) 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, 33416 + ... + 34946.

It is an arithmetic number, because the mean of its divisors is an integer number (3952560).

Almost surely, 252331111 is an apocalyptic number.

52331111 is a deficient number, since it is larger than the sum of its proper divisors (10909849).

52331111 is a wasteful number, since it uses less digits than its factorization.

52331111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814.

The product of its digits is 90, while the sum is 17.

The square root of 52331111 is about 7234.0245368674. The cubic root of 52331111 is about 374.0416679819.

Adding to 52331111 its reverse (11113325), we get a palindrome (63444436).

The spelling of 52331111 in words is "fifty-two million, three hundred thirty-one thousand, one hundred eleven".

Divisors: 1 7 19 133 257 1531 1799 4883 10717 29089 34181 203623 393467 2754269 7475873 52331111