16932521 has 2 divisors, whose sum is σ = 16932522. Its totient is φ = 16932520.

The previous prime is 16932511. The next prime is 16932523. The reversal of 16932521 is 12523961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15642025 + 1290496 = 3955^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 16932521 - 2⁶ = 16932457 is a prime.

Together with 16932523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16932523) 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 as a sum of consecutive naturals, namely, 8466260 + 8466261.

It is an arithmetic number, because the mean of its divisors is an integer number (8466261).

Almost surely, 2^16932521 is an apocalyptic number.

It is an amenable number.

16932521 is a deficient number, since it is larger than the sum of its proper divisors (1).

16932521 is an equidigital number, since it uses as much as digits as its factorization.

16932521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 16932521 is about 4114.9144584062. The cubic root of 16932521 is about 256.7874971268.

The spelling of 16932521 in words is "sixteen million, nine hundred thirty-two thousand, five hundred twenty-one".