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50250257 = 318115797
BaseRepresentation
bin1011111110110…
…0001000010001
310111112222101122
42333230020101
5100331002012
64553012025
71150056131
oct277541021
9114488348
1050250257
1126401842
12149b4015
13a5452a5
146960ac1
154628e72
hex2fec211

50250257 has 4 divisors (see below), whose sum is σ = 50269236. Its totient is φ = 50231280.

The previous prime is 50250253. The next prime is 50250271. The reversal of 50250257 is 75205205.

50250257 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: 75205205 = 515041041.

It can be written as a sum of positive squares in 2 ways, for example, as 18395521 + 31854736 = 4289^2 + 5644^2 .

It is a cyclic number.

It is not a de Polignac number, because 50250257 - 22 = 50250253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50250253) 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, 4718 + ... + 11079.

It is an arithmetic number, because the mean of its divisors is an integer number (12567309).

Almost surely, 250250257 is an apocalyptic number.

It is an amenable number.

50250257 is a deficient number, since it is larger than the sum of its proper divisors (18979).

50250257 is a wasteful number, since it uses less digits than its factorization.

50250257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18978.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 50250257 is about 7088.7415667381. The cubic root of 50250257 is about 369.0167637060.

The spelling of 50250257 in words is "fifty million, two hundred fifty thousand, two hundred fifty-seven".

Divisors: 1 3181 15797 50250257