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50294309 = 133868793
BaseRepresentation
bin1011111111011…
…0111000100101
310111122012211012
42333312320211
5100333404214
64553552005
71150331432
oct277667045
9114565735
1050294309
112643194a
1214a15605
13a55c360
146972b89
15463703e
hex2ff6e25

50294309 has 4 divisors (see below), whose sum is σ = 54163116. Its totient is φ = 46425504.

The previous prime is 50294303. The next prime is 50294327. The reversal of 50294309 is 90349205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90349205 = 518069841.

It can be written as a sum of positive squares in 2 ways, for example, as 4190209 + 46104100 = 2047^2 + 6790^2 .

It is a cyclic number.

It is not a de Polignac number, because 50294309 - 28 = 50294053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50294303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1934384 + ... + 1934409.

It is an arithmetic number, because the mean of its divisors is an integer number (13540779).

Almost surely, 250294309 is an apocalyptic number.

It is an amenable number.

50294309 is a deficient number, since it is larger than the sum of its proper divisors (3868807).

50294309 is a wasteful number, since it uses less digits than its factorization.

50294309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868806.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 50294309 is about 7091.8480666185. The cubic root of 50294309 is about 369.1245653339.

The spelling of 50294309 in words is "fifty million, two hundred ninety-four thousand, three hundred nine".

Divisors: 1 13 3868793 50294309