Search a number
-
+
71480455 = 5103138797
BaseRepresentation
bin1000100001010…
…11010010000111
311222111120202021
410100223102013
5121244333310
611032024011
71525400554
oct420532207
9158446667
1071480455
1137392362
121bb32007
1311a69637
1496c9a2b
15641e5da
hex442b487

71480455 has 8 divisors (see below), whose sum is σ = 86609952. Its totient is φ = 56628768.

The previous prime is 71480441. The next prime is 71480459. The reversal of 71480455 is 55408417.

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

It is a cyclic number.

It is not a de Polignac number, because 71480455 - 29 = 71479943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71480455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71480459) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 68884 + ... + 69913.

It is an arithmetic number, because the mean of its divisors is an integer number (10826244).

Almost surely, 271480455 is an apocalyptic number.

71480455 is a deficient number, since it is larger than the sum of its proper divisors (15129497).

71480455 is a wasteful number, since it uses less digits than its factorization.

71480455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138905.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 71480455 is about 8454.6114635742. The cubic root of 71480455 is about 415.0137025524.

The spelling of 71480455 in words is "seventy-one million, four hundred eighty thousand, four hundred fifty-five".

Divisors: 1 5 103 515 138797 693985 14296091 71480455