Search a number
-
+
805255001 = 2389393383
BaseRepresentation
bin101111111111110…
…011011101011001
32002010020012012022
4233333303131121
53122121130001
6211523224225
725645361135
oct5777633531
92063205168
10805255001
11383600001
121a5818075
13caaa2a65
1478d363c5
154aa6411b
hex2fff3759

805255001 has 8 divisors (see below), whose sum is σ = 849709440. Its totient is φ = 761587552.

The previous prime is 805254943. The next prime is 805255019. The reversal of 805255001 is 100552508.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-805255001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805255051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194645 + ... + 198738.

It is an arithmetic number, because the mean of its divisors is an integer number (106213680).

Almost surely, 2805255001 is an apocalyptic number.

It is an amenable number.

805255001 is a deficient number, since it is larger than the sum of its proper divisors (44454439).

805255001 is a wasteful number, since it uses less digits than its factorization.

805255001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393495.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 805255001 is about 28377.0153645516. The cubic root of 805255001 is about 930.3459617778.

The spelling of 805255001 in words is "eight hundred five million, two hundred fifty-five thousand, one".

Divisors: 1 23 89 2047 393383 9047809 35011087 805255001