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71027101 = 88180621
BaseRepresentation
bin1000011101111…
…00100110011101
311221122112212101
410032330212131
5121140331401
611014205101
71521502045
oct416744635
9157575771
1071027101
1137102792
121b953791
131193b192
14960c725
156380101
hex43bc99d

71027101 has 4 divisors (see below), whose sum is σ = 71108604. Its totient is φ = 70945600.

The previous prime is 71027093. The next prime is 71027123. The reversal of 71027101 is 10172017.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4995225 + 66031876 = 2235^2 + 8126^2 .

It is a cyclic number.

It is not a de Polignac number, because 71027101 - 23 = 71027093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71027141) 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, 39430 + ... + 41191.

It is an arithmetic number, because the mean of its divisors is an integer number (17777151).

Almost surely, 271027101 is an apocalyptic number.

It is an amenable number.

71027101 is a deficient number, since it is larger than the sum of its proper divisors (81503).

71027101 is an equidigital number, since it uses as much as digits as its factorization.

71027101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81502.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 71027101 is about 8427.7577682323. The cubic root of 71027101 is about 414.1344538280.

Adding to 71027101 its reverse (10172017), we get a palindrome (81199118).

The spelling of 71027101 in words is "seventy-one million, twenty-seven thousand, one hundred one".

Divisors: 1 881 80621 71027101