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2543985 = 32556533
BaseRepresentation
bin1001101101000101110001
311210020200200
421231011301
51122401420
6130305413
730423603
oct11550561
94706620
102543985
111488374
12a28269
136b0c22
144a3173
15353b90
hex26d171

2543985 has 12 divisors (see below), whose sum is σ = 4409652. Its totient is φ = 1356768.

The previous prime is 2543971. The next prime is 2544011. The reversal of 2543985 is 5893452.

2543985 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 2 ways, for example, as 400689 + 2143296 = 633^2 + 1464^2 .

It is not a de Polignac number, because 2543985 - 26 = 2543921 is a prime.

It is an unprimeable number.

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, 28222 + ... + 28311.

It is an arithmetic number, because the mean of its divisors is an integer number (367471).

22543985 is an apocalyptic number.

It is an amenable number.

2543985 is a deficient number, since it is larger than the sum of its proper divisors (1865667).

2543985 is a wasteful number, since it uses less digits than its factorization.

2543985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56544 (or 56541 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 2543985 is about 1594.9874607658. The cubic root of 2543985 is about 136.5122156278.

The spelling of 2543985 in words is "two million, five hundred forty-three thousand, nine hundred eighty-five".

Divisors: 1 3 5 9 15 45 56533 169599 282665 508797 847995 2543985