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47175049 = 99747317
BaseRepresentation
bin1011001111110…
…1010110001001
310021202202000001
42303331112021
544034100144
64403043001
71111660405
oct263752611
9107682001
1047175049
11246a1349
1213970461
139a0963c
1463a0105
15421cbd4
hex2cfd589

47175049 has 4 divisors (see below), whose sum is σ = 47223364. Its totient is φ = 47126736.

The previous prime is 47175041. The next prime is 47175053. The reversal of 47175049 is 94057174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94057174 = 247028587.

It can be written as a sum of positive squares in 2 ways, for example, as 40960000 + 6215049 = 6400^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 47175049 - 23 = 47175041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47174999 and 47175017.

It is not an unprimeable number, because it can be changed into a prime (47175041) 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, 22662 + ... + 24655.

It is an arithmetic number, because the mean of its divisors is an integer number (11805841).

Almost surely, 247175049 is an apocalyptic number.

It is an amenable number.

47175049 is a deficient number, since it is larger than the sum of its proper divisors (48315).

47175049 is an equidigital number, since it uses as much as digits as its factorization.

47175049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48314.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 47175049 is about 6868.4094956547. The cubic root of 47175049 is about 361.3300823006.

The spelling of 47175049 in words is "forty-seven million, one hundred seventy-five thousand, forty-nine".

Divisors: 1 997 47317 47175049