2043523505 has 16 divisors (see below), whose sum is σ = 2666656080. Its totient is φ = 1497065472.

The previous prime is 2043523499. The next prime is 2043523553. The reversal of 2043523505 is 5053253402.

It can be written as a sum of positive squares in 8 ways, for example, as 265298944 + 1778224561 = 16288^2 + 42169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043523505 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321740 + ... + 328029.

It is an arithmetic number, because the mean of its divisors is an integer number (166666005).

Almost surely, 2^2043523505 is an apocalyptic number.

It is an amenable number.

2043523505 is a deficient number, since it is larger than the sum of its proper divisors (623132575).

2043523505 is a wasteful number, since it uses less digits than its factorization.

2043523505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649828.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 2043523505 is about 45205.3481902308. The cubic root of 2043523505 is about 1268.9949071256.

Adding to 2043523505 its reverse (5053253402), we get a palindrome (7096776907).

The spelling of 2043523505 in words is "two billion, forty-three million, five hundred twenty-three thousand, five hundred five".