9504221521 has 8 divisors (see below), whose sum is σ = 10050098688. Its totient is φ = 8973300000.

The previous prime is 9504221509. The next prime is 9504221539. The reversal of 9504221521 is 1251224059.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9504221521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9504221921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3737605 + ... + 3740146.

It is an arithmetic number, because the mean of its divisors is an integer number (1256262336).

Almost surely, 2^9504221521 is an apocalyptic number.

It is an amenable number.

9504221521 is a deficient number, since it is larger than the sum of its proper divisors (545877167).

9504221521 is a wasteful number, since it uses less digits than its factorization.

9504221521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7477823.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 9504221521 is about 97489.5969886018. The cubic root of 9504221521 is about 2118.2254582709.

The spelling of 9504221521 in words is "nine billion, five hundred four million, two hundred twenty-one thousand, five hundred twenty-one".