966521 has 2 divisors, whose sum is σ = 966522. Its totient is φ = 966520.

The previous prime is 966509. The next prime is 966527. The reversal of 966521 is 125669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 525625 + 440896 = 725^2 + 664^2 .

It is an emirp because it is prime and its reverse (125669) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-966521 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 966521.

It is not a weakly prime, because it can be changed into another prime (966527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483260 + 483261.

It is an arithmetic number, because the mean of its divisors is an integer number (483261).

2⁹⁶⁶⁵²¹ is an apocalyptic number.

It is an amenable number.

966521 is a deficient number, since it is larger than the sum of its proper divisors (1).

966521 is an equidigital number, since it uses as much as digits as its factorization.

966521 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 966521 is about 983.1179990215. The cubic root of 966521 is about 98.8713425830.

The spelling of 966521 in words is "nine hundred sixty-six thousand, five hundred twenty-one".