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50144917 = 172949701
BaseRepresentation
bin1011111101001…
…0011010010101
310111100121220011
42333102122111
5100314114132
64550440221
71146140044
oct277223225
9114317804
1050144917
112633a689
1214963071
13a509364
14693455b
154607b47
hex2fd2695

50144917 has 4 divisors (see below), whose sum is σ = 53094636. Its totient is φ = 47195200.

The previous prime is 50144909. The next prime is 50144947. The reversal of 50144917 is 71944105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71944105 = 514388821.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 10719076 = 6279^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 50144917 - 23 = 50144909 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 (50144947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1474834 + ... + 1474867.

It is an arithmetic number, because the mean of its divisors is an integer number (13273659).

Almost surely, 250144917 is an apocalyptic number.

It is an amenable number.

50144917 is a deficient number, since it is larger than the sum of its proper divisors (2949719).

50144917 is a wasteful number, since it uses less digits than its factorization.

50144917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949718.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 50144917 is about 7081.3075769945. The cubic root of 50144917 is about 368.7587257535.

The spelling of 50144917 in words is "fifty million, one hundred forty-four thousand, nine hundred seventeen".

Divisors: 1 17 2949701 50144917