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52212753 = 3231718301
BaseRepresentation
bin1100011100101…
…1010000010001
310122020200102200
43013023100101
5101331302003
65103033413
71202541525
oct307132021
9118220380
1052212753
112752223a
121559b869
13aa81628
146d11d85
1548b56a3
hex31cb411

52212753 has 12 divisors (see below), whose sum is σ = 75660468. Its totient is φ = 34696800.

The previous prime is 52212751. The next prime is 52212781. The reversal of 52212753 is 35721225.

It can be written as a sum of positive squares in 2 ways, for example, as 1617984 + 50594769 = 1272^2 + 7113^2 .

It is not a de Polignac number, because 52212753 - 21 = 52212751 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (52212751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6298 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (6305039).

Almost surely, 252212753 is an apocalyptic number.

It is an amenable number.

52212753 is a deficient number, since it is larger than the sum of its proper divisors (23447715).

52212753 is a wasteful number, since it uses less digits than its factorization.

52212753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18624 (or 18621 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 52212753 is about 7225.8392592141. The cubic root of 52212753 is about 373.7594633756.

Adding to 52212753 its reverse (35721225), we get a palindrome (87933978).

The spelling of 52212753 in words is "fifty-two million, two hundred twelve thousand, seven hundred fifty-three".

Divisors: 1 3 9 317 951 2853 18301 54903 164709 5801417 17404251 52212753