2120544520 has 16 divisors (see below), whose sum is σ = 4771225260. Its totient is φ = 848217792.

The previous prime is 2120544463. The next prime is 2120544551. The reversal of 2120544520 is 254450212.

It can be written as a sum of positive squares in 2 ways, for example, as 2096357796 + 24186724 = 45786^2 + 4918^2 .

It is a super-2 number, since 2×2120544520² = 8993418122604060800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26506767 + ... + 26506846.

Almost surely, 2^2120544520 is an apocalyptic number.

2120544520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120544520 is an abundant number, since it is smaller than the sum of its proper divisors (2650680740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120544520 is a wasteful number, since it uses less digits than its factorization.

2120544520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53013624 (or 53013620 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2120544520 is about 46049.3704625807. The cubic root of 2120544520 is about 1284.7416337737.

Adding to 2120544520 its reverse (254450212), we get a palindrome (2374994732).

The spelling of 2120544520 in words is "two billion, one hundred twenty million, five hundred forty-four thousand, five hundred twenty".