2105171524 has 12 divisors (see below), whose sum is σ = 3692561404. Its totient is φ = 1050153984.

The previous prime is 2105171521. The next prime is 2105171561. The reversal of 2105171524 is 4251715012.

It can be written as a sum of positive squares in 2 ways, for example, as 1026049024 + 1079122500 = 32032^2 + 32850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2105171492 and 2105171501.

It is not an unprimeable number, because it can be changed into a prime (2105171521) 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, 605997 + ... + 609460.

Almost surely, 2^2105171524 is an apocalyptic number.

It is an amenable number.

2105171524 is a deficient number, since it is larger than the sum of its proper divisors (1587389880).

2105171524 is a wasteful number, since it uses less digits than its factorization.

2105171524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215894 (or 1215892 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2105171524 is about 45882.1482060289. The cubic root of 2105171524 is about 1281.6295010219.

Adding to 2105171524 its reverse (4251715012), we get a palindrome (6356886536).

The spelling of 2105171524 in words is "two billion, one hundred five million, one hundred seventy-one thousand, five hundred twenty-four".