5120405520 has 40 divisors (see below), whose sum is σ = 15873257856. Its totient is φ = 1365441408.

The previous prime is 5120405497. The next prime is 5120405569. The reversal of 5120405520 is 255040215.

It is a happy number.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10667272 + ... + 10667751.

Almost surely, 2^5120405520 is an apocalyptic number.

It is an amenable number.

5120405520 is an abundant number, since it is smaller than the sum of its proper divisors (10752852336).

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

5120405520 is a wasteful number, since it uses less digits than its factorization.

5120405520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21335039 (or 21335033 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 5120405520 is about 71557.0088810314. The cubic root of 5120405520 is about 1723.5932542802.

Adding to 5120405520 its reverse (255040215), we get a palindrome (5375445735).

The spelling of 5120405520 in words is "five billion, one hundred twenty million, four hundred five thousand, five hundred twenty".