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53000018 = 2316191381
BaseRepresentation
bin1100101000101…
…1011101010010
310200201200100122
43022023131102
5102032000033
65131550242
71212331001
oct312133522
9120650318
1053000018
1127a0a775
12158bb382
13ac98a76
147078c38
1549bda98
hex328b752

53000018 has 16 divisors (see below), whose sum is σ = 82256640. Its totient is φ = 25585200.

The previous prime is 53000011. The next prime is 53000039. The reversal of 53000018 is 81000035.

53000018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (53000011) 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 7 ways as a sum of consecutive naturals, for example, 37688 + ... + 39068.

It is an arithmetic number, because the mean of its divisors is an integer number (5141040).

Almost surely, 253000018 is an apocalyptic number.

53000018 is a deficient number, since it is larger than the sum of its proper divisors (29256622).

53000018 is a wasteful number, since it uses less digits than its factorization.

53000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 53000018 is about 7280.1111255255. Note that the first 4 decimals coincide. The cubic root of 53000018 is about 375.6286179461.

Adding to 53000018 its sum of digits (17), we get a palindrome (53000035).

The spelling of 53000018 in words is "fifty-three million, eighteen", and thus it is an aban number and an uban number.

Divisors: 1 2 31 62 619 1238 1381 2762 19189 38378 42811 85622 854839 1709678 26500009 53000018