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75005255 = 5131960733
BaseRepresentation
bin1000111100001…
…11110101000111
312020010122212102
410132013311013
5123200132010
611235342315
71600351133
oct436076507
9166118772
1075005255
113937a616
122115199b
1312701b10
149d663c3
1568b8ba5
hex4787d47

75005255 has 16 divisors (see below), whose sum is σ = 102033120. Its totient is φ = 52472448.

The previous prime is 75005251. The next prime is 75005257. The reversal of 75005255 is 55250057.

It is a cyclic number.

It is not a de Polignac number, because 75005255 - 22 = 75005251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75005251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29132 + ... + 31601.

It is an arithmetic number, because the mean of its divisors is an integer number (6377070).

Almost surely, 275005255 is an apocalyptic number.

75005255 is a deficient number, since it is larger than the sum of its proper divisors (27027865).

75005255 is a wasteful number, since it uses less digits than its factorization.

75005255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60770.

The product of its (nonzero) digits is 8750, while the sum is 29.

The square root of 75005255 is about 8660.5574300965. The cubic root of 75005255 is about 421.7261818401.

The spelling of 75005255 in words is "seventy-five million, five thousand, two hundred fifty-five".

Divisors: 1 5 13 19 65 95 247 1235 60733 303665 789529 1153927 3947645 5769635 15001051 75005255