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50987845 = 517599857
BaseRepresentation
bin1100001010000…
…0001101000101
310112221110011201
43002200031011
5101023102340
65020502501
71156250416
oct302401505
9115843151
1050987845
1126865a17
12150aaa31
13a742c2c
146ab380d
15472279a
hex30a0345

50987845 has 8 divisors (see below), whose sum is σ = 64784664. Its totient is φ = 38390784.

The previous prime is 50987843. The next prime is 50987863. The reversal of 50987845 is 54878905.

It can be written as a sum of positive squares in 4 ways, for example, as 19918369 + 31069476 = 4463^2 + 5574^2 .

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 50987845 - 21 = 50987843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50987795 and 50987804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50987843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299844 + ... + 300013.

It is an arithmetic number, because the mean of its divisors is an integer number (8098083).

Almost surely, 250987845 is an apocalyptic number.

It is an amenable number.

50987845 is a deficient number, since it is larger than the sum of its proper divisors (13796819).

50987845 is a wasteful number, since it uses less digits than its factorization.

50987845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599879.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 50987845 is about 7140.5773576091. The cubic root of 50987845 is about 370.8135131715.

The spelling of 50987845 in words is "fifty million, nine hundred eighty-seven thousand, eight hundred forty-five".

Divisors: 1 5 17 85 599857 2999285 10197569 50987845