5445313521 has 16 divisors (see below), whose sum is σ = 7360953600. Its totient is φ = 3580097040.

The previous prime is 5445313507. The next prime is 5445313553. The reversal of 5445313521 is 1253135445.

It is not a de Polignac number, because 5445313521 - 2¹⁸ = 5445051377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5445314521) 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, 123030 + ... + 161328.

It is an arithmetic number, because the mean of its divisors is an integer number (460059600).

Almost surely, 2^5445313521 is an apocalyptic number.

It is an amenable number.

5445313521 is a deficient number, since it is larger than the sum of its proper divisors (1915640079).

5445313521 is a wasteful number, since it uses less digits than its factorization.

5445313521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38956.

The product of its digits is 36000, while the sum is 33.

The square root of 5445313521 is about 73792.3676337872. The cubic root of 5445313521 is about 1759.3042964229.

Adding to 5445313521 its reverse (1253135445), we get a palindrome (6698448966).

The spelling of 5445313521 in words is "five billion, four hundred forty-five million, three hundred thirteen thousand, five hundred twenty-one".