15045313521 has 16 divisors (see below), whose sum is σ = 23007788928. Its totient is φ = 8566723200.

The previous prime is 15045313501. The next prime is 15045313561. The reversal of 15045313521 is 12531354051.

It is not a de Polignac number, because 15045313521 - 2⁹ = 15045313009 is a prime.

It is a super-2 number, since 2×15045313521² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15045313501) 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, 1268910 + ... + 1280711.

It is an arithmetic number, because the mean of its divisors is an integer number (1437986808).

Almost surely, 2^15045313521 is an apocalyptic number.

It is an amenable number.

15045313521 is a deficient number, since it is larger than the sum of its proper divisors (7962475407).

15045313521 is a wasteful number, since it uses less digits than its factorization.

15045313521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549912.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 15045313521 its reverse (12531354051), we get a palindrome (27576667572).

The spelling of 15045313521 in words is "fifteen billion, forty-five million, three hundred thirteen thousand, five hundred twenty-one".