1000535521 has 8 divisors (see below), whose sum is σ = 1005508224. Its totient is φ = 995574000.

The previous prime is 1000535519. The next prime is 1000535531. The reversal of 1000535521 is 1255350001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000535521 - 2¹ = 1000535519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000535492 and 1000535501.

It is not an unprimeable number, because it can be changed into a prime (1000535531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217770 + ... + 222316.

It is an arithmetic number, because the mean of its divisors is an integer number (125688528).

Almost surely, 2^1000535521 is an apocalyptic number.

It is an amenable number.

1000535521 is a deficient number, since it is larger than the sum of its proper divisors (4972703).

1000535521 is an equidigital number, since it uses as much as digits as its factorization.

1000535521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1000535521 is about 31631.2427988532. The cubic root of 1000535521 is about 1000.1784751447.

Adding to 1000535521 its reverse (1255350001), we get a palindrome (2255885522).

The spelling of 1000535521 in words is "one billion, five hundred thirty-five thousand, five hundred twenty-one".