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50568913 = 97521329
BaseRepresentation
bin1100000011100…
…1111011010001
310112011011111201
43000321323101
5100421201123
65003511201
71152554143
oct300717321
9115134451
1050568913
11265aa19a
1214b28501
13a627345
146a04c93
15468d5ad
hex3039ed1

50568913 has 4 divisors (see below), whose sum is σ = 51090340. Its totient is φ = 50047488.

The previous prime is 50568901. The next prime is 50568929. The reversal of 50568913 is 31986505.

50568913 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 an emirpimes, since its reverse is a distinct semiprime: 31986505 = 56397301.

It can be written as a sum of positive squares in 2 ways, for example, as 31270464 + 19298449 = 5592^2 + 4393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-50568913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50568113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260568 + ... + 260761.

It is an arithmetic number, because the mean of its divisors is an integer number (12772585).

Almost surely, 250568913 is an apocalyptic number.

It is an amenable number.

50568913 is a deficient number, since it is larger than the sum of its proper divisors (521427).

50568913 is an equidigital number, since it uses as much as digits as its factorization.

50568913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521426.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 50568913 is about 7111.1822505122. The cubic root of 50568913 is about 369.7951459149.

The spelling of 50568913 in words is "fifty million, five hundred sixty-eight thousand, nine hundred thirteen".

Divisors: 1 97 521329 50568913