9732521 has 2 divisors, whose sum is σ = 9732522. Its totient is φ = 9732520.

The previous prime is 9732509. The next prime is 9732523. The reversal of 9732521 is 1252379.

9732521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9517225 + 215296 = 3085^2 + 464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9732521 is a prime.

Together with 9732523, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₆₄₈₀₇₄ and since 9732521 and 648074 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (9732523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4866260 + 4866261.

It is an arithmetic number, because the mean of its divisors is an integer number (4866261).

Almost surely, 2^9732521 is an apocalyptic number.

It is an amenable number.

9732521 is a deficient number, since it is larger than the sum of its proper divisors (1).

9732521 is an equidigital number, since it uses as much as digits as its factorization.

9732521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 9732521 is about 3119.6988636726. The cubic root of 9732521 is about 213.5051965235.

The spelling of 9732521 in words is "nine million, seven hundred thirty-two thousand, five hundred twenty-one".