495221 has 2 divisors, whose sum is σ = 495222. Its totient is φ = 495220.

The previous prime is 495211. The next prime is 495241. The reversal of 495221 is 122594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302500 + 192721 = 550^2 + 439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495221 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 495221.

It is not a weakly prime, because it can be changed into another prime (495211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247610 + 247611.

It is an arithmetic number, because the mean of its divisors is an integer number (247611).

2⁴⁹⁵²²¹ is an apocalyptic number.

It is an amenable number.

495221 is a deficient number, since it is larger than the sum of its proper divisors (1).

495221 is an equidigital number, since it uses as much as digits as its factorization.

495221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 495221 is about 703.7194043083. The cubic root of 495221 is about 79.1163696520.

The spelling of 495221 in words is "four hundred ninety-five thousand, two hundred twenty-one".