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50263013 = 295317021
BaseRepresentation
bin1011111110111…
…1001111100101
310111120121220002
42333233033211
5100331404023
64553151045
71150141253
oct277571745
9114517802
1050263013
1126410389
12149bb485
13a54b038
1469655d3
15462cb28
hex2fef3e5

50263013 has 4 divisors (see below), whose sum is σ = 50282988. Its totient is φ = 50243040.

The previous prime is 50262991. The next prime is 50263043. The reversal of 50263013 is 31036205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31036205 = 56207241.

It can be written as a sum of positive squares in 2 ways, for example, as 45670564 + 4592449 = 6758^2 + 2143^2 .

It is a cyclic number.

It is not a de Polignac number, because 50263013 - 28 = 50262757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50263043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5558 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (12570747).

Almost surely, 250263013 is an apocalyptic number.

It is an amenable number.

50263013 is a deficient number, since it is larger than the sum of its proper divisors (19975).

50263013 is a wasteful number, since it uses less digits than its factorization.

50263013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19974.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 50263013 is about 7089.6412462127. The cubic root of 50263013 is about 369.0479859648.

Adding to 50263013 its reverse (31036205), we get a palindrome (81299218).

The spelling of 50263013 in words is "fifty million, two hundred sixty-three thousand, thirteen".

Divisors: 1 2953 17021 50263013