5104021520 has 80 divisors (see below), whose sum is σ = 13531477680. Its totient is φ = 1773699072.

The previous prime is 5104021441. The next prime is 5104021523. The reversal of 5104021520 is 251204015.

It can be written as a sum of positive squares in 8 ways, for example, as 16908544 + 5087112976 = 4112^2 + 71324^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×5104021520² = 52102071353246220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 5104021492 and 5104021501.

It is not an unprimeable number, because it can be changed into a prime (5104021523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126665 + ... + 162024.

It is an arithmetic number, because the mean of its divisors is an integer number (169143471).

Almost surely, 2^5104021520 is an apocalyptic number.

It is an amenable number.

5104021520 is an abundant number, since it is smaller than the sum of its proper divisors (8427456160).

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

5104021520 is a wasteful number, since it uses less digits than its factorization.

5104021520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288732 (or 288726 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 5104021520 is about 71442.4350088937. The cubic root of 5104021520 is about 1721.7529361639.

Adding to 5104021520 its reverse (251204015), we get a palindrome (5355225535).

The spelling of 5104021520 in words is "five billion, one hundred four million, twenty-one thousand, five hundred twenty".