1463221 has 2 divisors, whose sum is σ = 1463222. Its totient is φ = 1463220.

The previous prime is 1463219. The next prime is 1463233. The reversal of 1463221 is 1223641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199025 + 264196 = 1095^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1463221 - 2¹ = 1463219 is a prime.

Together with 1463219, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1463201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 731610 + 731611.

It is an arithmetic number, because the mean of its divisors is an integer number (731611).

2^1463221 is an apocalyptic number.

It is an amenable number.

1463221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1463221 is an equidigital number, since it uses as much as digits as its factorization.

1463221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 1463221 is about 1209.6367223262. The cubic root of 1463221 is about 113.5280840283.

Adding to 1463221 its reverse (1223641), we get a palindrome (2686862).

It can be divided in two parts, 1463 and 221, that multiplied together give a palindrome (323323).

The spelling of 1463221 in words is "one million, four hundred sixty-three thousand, two hundred twenty-one".