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71075485 = 5132192233
BaseRepresentation
bin1000011110010…
…00011010011101
311221202000020101
410033020122131
5121143403420
611015221101
71522063105
oct417103235
9157660211
1071075485
1137136078
121b977791
1311957200
149622205
15638e60a
hex43c869d

71075485 has 36 divisors (see below), whose sum is σ = 97891092. Its totient is φ = 49510656.

The previous prime is 71075443. The next prime is 71075507. The reversal of 71075485 is 58457017.

It can be written as a sum of positive squares in 6 ways, for example, as 24029604 + 47045881 = 4902^2 + 6859^2 .

It is not a de Polignac number, because 71075485 - 29 = 71074973 is a prime.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 304929 + ... + 305161.

It is an arithmetic number, because the mean of its divisors is an integer number (2719197).

Almost surely, 271075485 is an apocalyptic number.

It is an amenable number.

71075485 is a deficient number, since it is larger than the sum of its proper divisors (26815607).

71075485 is a wasteful number, since it uses less digits than its factorization.

71075485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 71075485 is about 8430.6277939428. The cubic root of 71075485 is about 414.2284692717.

The spelling of 71075485 in words is "seventy-one million, seventy-five thousand, four hundred eighty-five".

Divisors: 1 5 13 19 65 95 169 233 247 361 845 1165 1235 1805 3029 3211 4427 4693 15145 16055 22135 23465 39377 57551 61009 84113 196885 287755 305045 420565 748163 1093469 3740815 5467345 14215097 71075485