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71048465 = 514209693
BaseRepresentation
bin1000011110000…
…01110100010001
311221200122011122
410033001310101
5121142022330
611014452025
71521621245
oct417016421
9157618148
1071048465
1137117844
121b964015
1311947b17
149616425
1563865e5
hex43c1d11

71048465 has 4 divisors (see below), whose sum is σ = 85258164. Its totient is φ = 56838768.

The previous prime is 71048459. The next prime is 71048479. The reversal of 71048465 is 56484017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56484017 = 192972843.

It can be written as a sum of positive squares in 2 ways, for example, as 46881409 + 24167056 = 6847^2 + 4916^2 .

It is a cyclic number.

It is not a de Polignac number, because 71048465 - 218 = 70786321 is a prime.

It is a super-3 number, since 3×710484653 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7104842 + ... + 7104851.

It is an arithmetic number, because the mean of its divisors is an integer number (21314541).

Almost surely, 271048465 is an apocalyptic number.

It is an amenable number.

71048465 is a deficient number, since it is larger than the sum of its proper divisors (14209699).

71048465 is a wasteful number, since it uses less digits than its factorization.

71048465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14209698.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 71048465 is about 8429.0251512260. The cubic root of 71048465 is about 414.1759716966.

The spelling of 71048465 in words is "seventy-one million, forty-eight thousand, four hundred sixty-five".

Divisors: 1 5 14209693 71048465