2105530541 has 4 divisors (see below), whose sum is σ = 2107932252. Its totient is φ = 2103128832.

The previous prime is 2105530517. The next prime is 2105530549. The reversal of 2105530541 is 1450355012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1829272900 + 276257641 = 42770^2 + 16621^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105530541 - 2¹⁴ = 2105514157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105530541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105530549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199540 + ... + 1201293.

It is an arithmetic number, because the mean of its divisors is an integer number (526983063).

Almost surely, 2^2105530541 is an apocalyptic number.

It is an amenable number.

2105530541 is a deficient number, since it is larger than the sum of its proper divisors (2401711).

2105530541 is an equidigital number, since it uses as much as digits as its factorization.

2105530541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401710.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2105530541 is about 45886.0604214395. The cubic root of 2105530541 is about 1281.7023534584.

Adding to 2105530541 its reverse (1450355012), we get a palindrome (3555885553).

The spelling of 2105530541 in words is "two billion, one hundred five million, five hundred thirty thousand, five hundred forty-one".