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5781249 = 32642361
BaseRepresentation
bin10110000011011100000001
3101212201101100
4112003130001
52434444444
6323525013
7100065645
oct26033401
911781340
105781249
1132995a1
121b29769
131275576
14aa6c25
15792e69
hex583701

5781249 has 6 divisors (see below), whose sum is σ = 8350706. Its totient is φ = 3854160.

The previous prime is 5781247. The next prime is 5781253. The reversal of 5781249 is 9421875.

It can be written as a sum of positive squares in only one way, i.e., 5489649 + 291600 = 2343^2 + 540^2 .

It is a trimorphic number since its cube, 193225760327165781249, ends in 5781249.

It is not a de Polignac number, because 5781249 - 21 = 5781247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5781247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321172 + ... + 321189.

Almost surely, 25781249 is an apocalyptic number.

It is an amenable number.

5781249 is a deficient number, since it is larger than the sum of its proper divisors (2569457).

5781249 is a wasteful number, since it uses less digits than its factorization.

5781249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642367 (or 642364 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 5781249 is about 2404.4227997588. The cubic root of 5781249 is about 179.4763484535.

The spelling of 5781249 in words is "five million, seven hundred eighty-one thousand, two hundred forty-nine".

Divisors: 1 3 9 642361 1927083 5781249