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53129867 = 722574219
BaseRepresentation
bin1100101010101…
…1001010001011
310200222021110212
43022223022023
5102100123432
65134431335
71213411400
oct312531213
9120867425
1053129867
1127a9928a
121596254b
13b012bbb
1470b02a7
1549e72b2
hex32ab28b

53129867 has 12 divisors (see below), whose sum is σ = 62059320. Its totient is φ = 45351936.

The previous prime is 53129819. The next prime is 53129873. The reversal of 53129867 is 76892135.

53129867 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 53129867 - 212 = 53125771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53129807) 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 11 ways as a sum of consecutive naturals, for example, 10484 + ... + 14702.

It is an arithmetic number, because the mean of its divisors is an integer number (5171610).

Almost surely, 253129867 is an apocalyptic number.

53129867 is a deficient number, since it is larger than the sum of its proper divisors (8929453).

53129867 is a wasteful number, since it uses less digits than its factorization.

53129867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490 (or 4483 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 53129867 is about 7289.0237343557. The cubic root of 53129867 is about 375.9351286718.

The spelling of 53129867 in words is "fifty-three million, one hundred twenty-nine thousand, eight hundred sixty-seven".

Divisors: 1 7 49 257 1799 4219 12593 29533 206731 1084283 7589981 53129867