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805057051 = 4321378761
BaseRepresentation
bin101111111111000…
…011001000011011
32002002212010122211
4233333003020123
53122043311201
6211515055551
725643605051
oct5777031033
92062763584
10805057051
11383485307
121a57415b7
13caa33926
1478cc41d1
154aa25651
hex2ffc321b

805057051 has 8 divisors (see below), whose sum is σ = 824258864. Its totient is φ = 785877120.

The previous prime is 805057039. The next prime is 805057061. The reversal of 805057051 is 150750508.

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 805057051 - 223 = 796668443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805057061) 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, 87511 + ... + 96271.

It is an arithmetic number, because the mean of its divisors is an integer number (103032358).

Almost surely, 2805057051 is an apocalyptic number.

805057051 is a deficient number, since it is larger than the sum of its proper divisors (19201813).

805057051 is a wasteful number, since it uses less digits than its factorization.

805057051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10941.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 805057051 is about 28373.5272921785. The cubic root of 805057051 is about 930.2697221289.

The spelling of 805057051 in words is "eight hundred five million, fifty-seven thousand, fifty-one".

Divisors: 1 43 2137 8761 91891 376723 18722257 805057051