4545313521 has 32 divisors (see below), whose sum is σ = 7476572160. Its totient is φ = 2398718784.

The previous prime is 4545313499. The next prime is 4545313541. The reversal of 4545313521 is 1253135454.

It is not a de Polignac number, because 4545313521 - 2¹¹ = 4545311473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4545313541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148245 + ... + 176258.

It is an arithmetic number, because the mean of its divisors is an integer number (233642880).

Almost surely, 2^4545313521 is an apocalyptic number.

It is an amenable number.

4545313521 is a deficient number, since it is larger than the sum of its proper divisors (2931258639).

4545313521 is a wasteful number, since it uses less digits than its factorization.

4545313521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324565.

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

The square root of 4545313521 is about 67418.9403728655. The cubic root of 4545313521 is about 1656.4866809626.

Adding to 4545313521 its reverse (1253135454), we get a palindrome (5798448975).

The spelling of 4545313521 in words is "four billion, five hundred forty-five million, three hundred thirteen thousand, five hundred twenty-one".