495644321 has 2 divisors, whose sum is σ = 495644322. Its totient is φ = 495644320.

The previous prime is 495644311. The next prime is 495644327. The reversal of 495644321 is 123446594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257281600 + 238362721 = 16040^2 + 15439^2 .

It is a cyclic number.

It is not a de Polignac number, because 495644321 - 2⁶ = 495644257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (495644327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247822160 + 247822161.

It is an arithmetic number, because the mean of its divisors is an integer number (247822161).

Almost surely, 2^495644321 is an apocalyptic number.

It is an amenable number.

495644321 is a deficient number, since it is larger than the sum of its proper divisors (1).

495644321 is an equidigital number, since it uses as much as digits as its factorization.

495644321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 495644321 is about 22263.0707899876. The cubic root of 495644321 is about 791.3890644686.

The spelling of 495644321 in words is "four hundred ninety-five million, six hundred forty-four thousand, three hundred twenty-one".