9069521 has 4 divisors (see below), whose sum is σ = 9463872. Its totient is φ = 8675172.

The previous prime is 9069503. The next prime is 9069583. The reversal of 9069521 is 1259609.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1259609 = 13 ⋅96893.

It is a cyclic number.

It is not a de Polignac number, because 9069521 - 2²² = 4875217 is a prime.

It is a super-2 number, since 2×9069521² = 164512422338882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9065521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197141 + ... + 197186.

It is an arithmetic number, because the mean of its divisors is an integer number (2365968).

Almost surely, 2^9069521 is an apocalyptic number.

It is an amenable number.

9069521 is a deficient number, since it is larger than the sum of its proper divisors (394351).

9069521 is a wasteful number, since it uses less digits than its factorization.

9069521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394350.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 9069521 is about 3011.5645435554. The cubic root of 9069521 is about 208.5425998945.

The spelling of 9069521 in words is "nine million, sixty-nine thousand, five hundred twenty-one".