2171526044 has 6 divisors (see below), whose sum is σ = 3800170584. Its totient is φ = 1085763020.

The previous prime is 2171525977. The next prime is 2171526053. The reversal of 2171526044 is 4406251712.

It is a self number, because there is not a number n which added to its sum of digits gives 2171526044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271440752 + ... + 271440759.

It is an arithmetic number, because the mean of its divisors is an integer number (633361764).

Almost surely, 2^2171526044 is an apocalyptic number.

It is an amenable number.

2171526044 is a deficient number, since it is larger than the sum of its proper divisors (1628644540).

2171526044 is a wasteful number, since it uses less digits than its factorization.

2171526044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542881515 (or 542881513 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2171526044 is about 46599.6356638118. The cubic root of 2171526044 is about 1294.9560057206.

Adding to 2171526044 its reverse (4406251712), we get a palindrome (6577777756).

The spelling of 2171526044 in words is "two billion, one hundred seventy-one million, five hundred twenty-six thousand, forty-four".