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56850047 = 320317749
BaseRepresentation
bin1101100011011…
…1011001111111
310221222021121022
43120313121333
5104023200142
65350254355
71260134402
oct330673177
9127867538
1056850047
112a0aa311
12170573bb
13ba162a7
14779bd39
154ece6d2
hex363767f

56850047 has 4 divisors (see below), whose sum is σ = 56871000. Its totient is φ = 56829096.

The previous prime is 56850041. The next prime is 56850077. The reversal of 56850047 is 74005865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74005865 = 514801173.

It is a cyclic number.

It is not a de Polignac number, because 56850047 - 28 = 56849791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56849989 and 56850016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56850041) 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, 5672 + ... + 12077.

It is an arithmetic number, because the mean of its divisors is an integer number (14217750).

Almost surely, 256850047 is an apocalyptic number.

56850047 is a deficient number, since it is larger than the sum of its proper divisors (20953).

56850047 is a wasteful number, since it uses less digits than its factorization.

56850047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20952.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 56850047 is about 7539.8970152118. The cubic root of 56850047 is about 384.5123347093.

The spelling of 56850047 in words is "fifty-six million, eight hundred fifty thousand, forty-seven".

Divisors: 1 3203 17749 56850047