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71082601 = 199357199
BaseRepresentation
bin1000011110010…
…10001001101001
311221202100222221
410033022021221
5121144120401
611015314041
71522122622
oct417121151
9157670887
1071082601
1137140457
121b97b921
131195a515
149624a49
1563917a1
hex43ca269

71082601 has 4 divisors (see below), whose sum is σ = 71440000. Its totient is φ = 70725204.

The previous prime is 71082589. The next prime is 71082607. The reversal of 71082601 is 10628017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-71082601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71082607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178401 + ... + 178798.

It is an arithmetic number, because the mean of its divisors is an integer number (17860000).

Almost surely, 271082601 is an apocalyptic number.

It is an amenable number.

71082601 is a deficient number, since it is larger than the sum of its proper divisors (357399).

71082601 is a wasteful number, since it uses less digits than its factorization.

71082601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357398.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 71082601 is about 8431.0498160075. The cubic root of 71082601 is about 414.2422928445.

The spelling of 71082601 in words is "seventy-one million, eighty-two thousand, six hundred one".

Divisors: 1 199 357199 71082601