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50306945 = 513773953
BaseRepresentation
bin1011111111100…
…1111110000001
310111122212011012
42333321332001
5100334310240
64554130305
71150413323
oct277717601
9114585135
1050306945
1126440397
1214a20995
13a565030
146977613
15463ab65
hex2ff9f81

50306945 has 8 divisors (see below), whose sum is σ = 65012136. Its totient is φ = 37149696.

The previous prime is 50306941. The next prime is 50306953. The reversal of 50306945 is 54960305.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 237169 + 50069776 = 487^2 + 7076^2 .

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 50306945 - 22 = 50306941 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50306941) 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 7 ways as a sum of consecutive naturals, for example, 386912 + ... + 387041.

It is an arithmetic number, because the mean of its divisors is an integer number (8126517).

Almost surely, 250306945 is an apocalyptic number.

It is an amenable number.

50306945 is a deficient number, since it is larger than the sum of its proper divisors (14705191).

50306945 is a wasteful number, since it uses less digits than its factorization.

50306945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773971.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 50306945 is about 7092.7388926986. The cubic root of 50306945 is about 369.1554758387.

The spelling of 50306945 in words is "fifty million, three hundred six thousand, nine hundred forty-five".

Divisors: 1 5 13 65 773953 3869765 10061389 50306945