9521001 has 24 divisors (see below), whose sum is σ = 15924480. Its totient is φ = 5368896.

The previous prime is 9520963. The next prime is 9521023. The reversal of 9521001 is 1001259.

It is not a de Polignac number, because 9521001 - 2¹⁵ = 9488233 is a prime.

9521001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9521051) 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 23 ways as a sum of consecutive naturals, for example, 4021 + ... + 5933.

It is an arithmetic number, because the mean of its divisors is an integer number (663520).

Almost surely, 2^9521001 is an apocalyptic number.

It is an amenable number.

9521001 is a deficient number, since it is larger than the sum of its proper divisors (6403479).

9521001 is a wasteful number, since it uses less digits than its factorization.

9521001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 9521001 is about 3085.6119328263. The cubic root of 9521001 is about 211.9471284433.

It can be divided in two parts, 952 and 1001, that added together give a triangular number (1953 = T₆₂).

The spelling of 9521001 in words is "nine million, five hundred twenty-one thousand, one".