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50288305 = 510057661
BaseRepresentation
bin1011111111010…
…1011010110001
310111121220120211
42333311122301
5100333211210
64553504121
71150305064
oct277653261
9114556524
1050288305
1126428391
1214a12041
13a5596c2
1469708db
15463538a
hex2ff56b1

50288305 has 4 divisors (see below), whose sum is σ = 60345972. Its totient is φ = 40230640.

The previous prime is 50288299. The next prime is 50288321. The reversal of 50288305 is 50388205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27363361 + 22924944 = 5231^2 + 4788^2 .

It is not a de Polignac number, because 50288305 - 221 = 48191153 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 5028826 + ... + 5028835.

It is an arithmetic number, because the mean of its divisors is an integer number (15086493).

Almost surely, 250288305 is an apocalyptic number.

It is an amenable number.

50288305 is a deficient number, since it is larger than the sum of its proper divisors (10057667).

50288305 is a wasteful number, since it uses less digits than its factorization.

50288305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10057666.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 50288305 is about 7091.4247510638. The cubic root of 50288305 is about 369.1098763818.

The spelling of 50288305 in words is "fifty million, two hundred eighty-eight thousand, three hundred five".

Divisors: 1 5 10057661 50288305