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5509540 = 225833319
BaseRepresentation
bin10101000001000110100100
3101100220200001
4111001012210
52402301130
6314031044
764554541
oct25010644
911326601
105509540
113123443
121a18484
1311ab9aa
14a35bc8
1573c6ca
hex5411a4

5509540 has 24 divisors (see below), whose sum is σ = 11712960. Its totient is φ = 2176608.

The previous prime is 5509453. The next prime is 5509549. The reversal of 5509540 is 459055.

5509540 is a nontrivial binomial coefficient, being equal to C(3320, 2).

It is a junction number, because it is equal to n+sod(n) for n = 5509499 and 5509508.

It is not an unprimeable number, because it can be changed into a prime (5509549) 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, 1 + ... + 3319.

It is an arithmetic number, because the mean of its divisors is an integer number (488040).

Almost surely, 25509540 is an apocalyptic number.

5509540 is the 3319-th triangular number and also the 1660-th hexagonal number.

5509540 is the 1107-th centered nonagonal number.

It is an amenable number.

5509540 is an abundant number, since it is smaller than the sum of its proper divisors (6203420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5509540 is a wasteful number, since it uses less digits than its factorization.

5509540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 5509540 is about 2347.2409335217. The cubic root of 5509540 is about 176.6194169753.

It can be divided in two parts, 5 and 509540, that added together give a triangular number (509545 = T1009).

The spelling of 5509540 in words is "five million, five hundred nine thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1660 3319 6638 13276 16595 33190 66380 275477 550954 1101908 1377385 2754770 5509540