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53252660 = 22511232371
BaseRepresentation
bin1100101100100…
…1001000110100
310201012111220202
43023021020310
5102113041120
65141220032
71214432366
oct313111064
9121174822
1053252660
112807256a
1215a01618
13b056a66
147102d36
154a1d875
hex32c9234

53252660 has 24 divisors (see below), whose sum is σ = 111977376. Its totient is φ = 21273120.

The previous prime is 53252609. The next prime is 53252663. The reversal of 53252660 is 6625235.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53252663) 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 7 ways as a sum of consecutive naturals, for example, 21275 + ... + 23645.

It is an arithmetic number, because the mean of its divisors is an integer number (4665724).

Almost surely, 253252660 is an apocalyptic number.

It is an amenable number.

53252660 is an abundant number, since it is smaller than the sum of its proper divisors (58724716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53252660 is a wasteful number, since it uses less digits than its factorization.

53252660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 53252660 is about 7297.4420175840. The cubic root of 53252660 is about 376.2245244945.

Adding to 53252660 its reverse (6625235), we get a palindrome (59877895).

The spelling of 53252660 in words is "fifty-three million, two hundred fifty-two thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 1123 2246 2371 4492 4742 5615 9484 11230 11855 22460 23710 47420 2662633 5325266 10650532 13313165 26626330 53252660