5145284321 has 4 divisors (see below), whose sum is σ = 5148211200. Its totient is φ = 5142357444.

The previous prime is 5145284317. The next prime is 5145284329. The reversal of 5145284321 is 1234825415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5145284321 - 2² = 5145284317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5145284329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460801 + ... + 1464318.

It is an arithmetic number, because the mean of its divisors is an integer number (1287052800).

Almost surely, 2^5145284321 is an apocalyptic number.

It is an amenable number.

5145284321 is a deficient number, since it is larger than the sum of its proper divisors (2926879).

5145284321 is a wasteful number, since it uses less digits than its factorization.

5145284321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926878.

The product of its digits is 38400, while the sum is 35.

The square root of 5145284321 is about 71730.6372549415. The cubic root of 5145284321 is about 1726.3802517124.

The spelling of 5145284321 in words is "five billion, one hundred forty-five million, two hundred eighty-four thousand, three hundred twenty-one".