5145520521 has 8 divisors (see below), whose sum is σ = 6869760064. Its totient is φ = 3425814000.

The previous prime is 5145520439. The next prime is 5145520531. The reversal of 5145520521 is 1250255415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-5145520521 is a prime.

It is a super-2 number, since 2×5145520521² = 52952762864064222882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5145520531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130605 + ... + 1135146.

It is an arithmetic number, because the mean of its divisors is an integer number (858720008).

Almost surely, 2^5145520521 is an apocalyptic number.

It is an amenable number.

5145520521 is a deficient number, since it is larger than the sum of its proper divisors (1724239543).

5145520521 is a wasteful number, since it uses less digits than its factorization.

5145520521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266511.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 5145520521 is about 71732.2836733921. The cubic root of 5145520521 is about 1726.4066684434.

Adding to 5145520521 its reverse (1250255415), we get a palindrome (6395775936).

The spelling of 5145520521 in words is "five billion, one hundred forty-five million, five hundred twenty thousand, five hundred twenty-one".