5211125520 has 40 divisors (see below), whose sum is σ = 16154489856. Its totient is φ = 1389633408.

The previous prime is 5211125503. The next prime is 5211125527. The reversal of 5211125520 is 255211125.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (5211125527) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 10856272 + ... + 10856751.

Almost surely, 2^5211125520 is an apocalyptic number.

It is an amenable number.

5211125520 is an abundant number, since it is smaller than the sum of its proper divisors (10943364336).

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

5211125520 is a wasteful number, since it uses less digits than its factorization.

5211125520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21713039 (or 21713033 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 5211125520 is about 72188.1258933905. The cubic root of 5211125520 is about 1733.7128895960.

Adding to 5211125520 its reverse (255211125), we get a palindrome (5466336645).

The spelling of 5211125520 in words is "five billion, two hundred eleven million, one hundred twenty-five thousand, five hundred twenty".