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855486481 = 1396154579
BaseRepresentation
bin110010111111011…
…011000000010001
32012121202012211111
4302333123000101
53223001031411
6220520013321
730125341453
oct6277330021
92177665744
10855486481
113a9999723
121ba601241
1310830c625
14818902d3
1550187721
hex32fdb011

855486481 has 4 divisors (see below), whose sum is σ = 861641200. Its totient is φ = 849331764.

The previous prime is 855486469. The next prime is 855486503. The reversal of 855486481 is 184684558.

855486481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184684558 = 292342279.

It is a cyclic number.

It is not a de Polignac number, because 855486481 - 213 = 855478289 is a prime.

It is a super-2 number, since 2×8554864812 = 1463714238347526722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855486421) 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, 3077151 + ... + 3077428.

It is an arithmetic number, because the mean of its divisors is an integer number (215410300).

Almost surely, 2855486481 is an apocalyptic number.

It is an amenable number.

855486481 is a deficient number, since it is larger than the sum of its proper divisors (6154719).

855486481 is a wasteful number, since it uses less digits than its factorization.

855486481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154718.

The product of its digits is 1228800, while the sum is 49.

The square root of 855486481 is about 29248.7005010479. The cubic root of 855486481 is about 949.3019732973.

It can be divided in two parts, 85548 and 6481, that added together give a palindrome (92029).

The spelling of 855486481 in words is "eight hundred fifty-five million, four hundred eighty-six thousand, four hundred eighty-one".

Divisors: 1 139 6154579 855486481