Search a number
-
+
71050045 = 5111291819
BaseRepresentation
bin1000011110000…
…10001100111101
311221200201100011
410033002030331
5121142100140
611014503221
71521625663
oct417021475
9157621304
1071050045
1137118a50
121b964b11
1311948761
149616c33
156386cea
hex43c233d

71050045 has 8 divisors (see below), whose sum is σ = 93011040. Its totient is φ = 51672720.

The previous prime is 71050043. The next prime is 71050069. The reversal of 71050045 is 54005017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71050045 - 21 = 71050043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71049998 and 71050025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71050043) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 645855 + ... + 645964.

It is an arithmetic number, because the mean of its divisors is an integer number (11626380).

Almost surely, 271050045 is an apocalyptic number.

It is an amenable number.

71050045 is a deficient number, since it is larger than the sum of its proper divisors (21960995).

71050045 is a wasteful number, since it uses less digits than its factorization.

71050045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291835.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 71050045 is about 8429.1188744732. The cubic root of 71050045 is about 414.1790418694.

The spelling of 71050045 in words is "seventy-one million, fifty thousand, forty-five".

Divisors: 1 5 11 55 1291819 6459095 14210009 71050045