Search a number
-
+
5144785 = 51028957
BaseRepresentation
bin10011101000000011010001
3100200101022121
4103220003101
52304113120
6302134241
761505242
oct23500321
910611277
105144785
1129a4398
121881381
1310b1969
1497ccc9
156b95aa
hex4e80d1

5144785 has 4 divisors (see below), whose sum is σ = 6173748. Its totient is φ = 4115824.

The previous prime is 5144759. The next prime is 5144809. The reversal of 5144785 is 5874415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5874415 = 51174883.

It can be written as a sum of positive squares in 2 ways, for example, as 1784896 + 3359889 = 1336^2 + 1833^2 .

It is a cyclic number.

It is not a de Polignac number, because 5144785 - 25 = 5144753 is a prime.

It is a Duffinian number.

5144785 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5144785.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514474 + ... + 514483.

It is an arithmetic number, because the mean of its divisors is an integer number (1543437).

Almost surely, 25144785 is an apocalyptic number.

It is an amenable number.

5144785 is a deficient number, since it is larger than the sum of its proper divisors (1028963).

5144785 is a wasteful number, since it uses less digits than its factorization.

5144785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028962.

The product of its digits is 22400, while the sum is 34.

The square root of 5144785 is about 2268.2118507758. The cubic root of 5144785 is about 172.6324404731.

It can be divided in two parts, 5144 and 785, that added together give a square (5929 = 772).

The spelling of 5144785 in words is "five million, one hundred forty-four thousand, seven hundred eighty-five".

Divisors: 1 5 1028957 5144785