5145530520 has 128 divisors (see below), whose sum is σ = 16724413440. Its totient is φ = 1258944000.

The previous prime is 5145530519. The next prime is 5145530557. The reversal of 5145530520 is 250355415.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250645 + ... + 270395.

It is an arithmetic number, because the mean of its divisors is an integer number (130659480).

Almost surely, 2^5145530520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5145530520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8362206720).

5145530520 is an abundant number, since it is smaller than the sum of its proper divisors (11578882920).

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

5145530520 is a wasteful number, since it uses less digits than its factorization.

5145530520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19945 (or 19941 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 5145530520 is about 71732.3533700101. The cubic root of 5145530520 is about 1726.4077867189.

Adding to 5145530520 its reverse (250355415), we get a palindrome (5395885935).

The spelling of 5145530520 in words is "five billion, one hundred forty-five million, five hundred thirty thousand, five hundred twenty".