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2543489 = 13172677
BaseRepresentation
bin1001101100111110000001
311210020000022
421230332001
51122342424
6130303225
730422264
oct11547601
94706008
102543489
111487a63
12a27b15
136b0930
144a2cdb
1535395e
hex26cf81

2543489 has 12 divisors (see below), whose sum is σ = 2914044. Its totient is φ = 2206464.

The previous prime is 2543479. The next prime is 2543507. The reversal of 2543489 is 9843452.

2543489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 490000 + 2053489 = 700^2 + 1433^2 .

It is not a de Polignac number, because 2543489 - 212 = 2539393 is a prime.

It is a d-powerful number, because it can be written as 219 + 59 + 42 + 3 + 48 + 83 + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3419 + ... + 4095.

It is an arithmetic number, because the mean of its divisors is an integer number (242837).

22543489 is an apocalyptic number.

It is an amenable number.

2543489 is a deficient number, since it is larger than the sum of its proper divisors (370555).

2543489 is a wasteful number, since it uses less digits than its factorization.

2543489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 707 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 2543489 is about 1594.8319660704. The cubic root of 2543489 is about 136.5033431357.

The spelling of 2543489 in words is "two million, five hundred forty-three thousand, four hundred eighty-nine".

Divisors: 1 13 17 221 289 677 3757 8801 11509 149617 195653 2543489