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75253005 = 3253745197
BaseRepresentation
bin1000111110001…
…00010100001101
312020121020201100
410133010110031
5123231044010
611244533313
71602432342
oct437042415
9166536640
1075253005
1139529773
1221251239
131278a809
149dcc7c9
1569172c0
hex47c450d

75253005 has 24 divisors (see below), whose sum is σ = 133966872. Its totient is φ = 39049344.

The previous prime is 75252949. The next prime is 75253021. The reversal of 75253005 is 50035257.

It can be written as a sum of positive squares in 4 ways, for example, as 40182921 + 35070084 = 6339^2 + 5922^2 .

It is not a de Polignac number, because 75253005 - 212 = 75248909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75253005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20934 + ... + 24263.

It is an arithmetic number, because the mean of its divisors is an integer number (5581953).

Almost surely, 275253005 is an apocalyptic number.

It is an amenable number.

75253005 is a deficient number, since it is larger than the sum of its proper divisors (58713867).

75253005 is a wasteful number, since it uses less digits than its factorization.

75253005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45245 (or 45242 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 75253005 is about 8674.8489900401. The cubic root of 75253005 is about 422.1900063780.

The spelling of 75253005 in words is "seventy-five million, two hundred fifty-three thousand, five".

Divisors: 1 3 5 9 15 37 45 111 185 333 555 1665 45197 135591 225985 406773 677955 1672289 2033865 5016867 8361445 15050601 25084335 75253005