1226549 has 2 divisors, whose sum is σ = 1226550. Its totient is φ = 1226548.

The previous prime is 1226539. The next prime is 1226557. The reversal of 1226549 is 9456221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1060900 + 165649 = 1030^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226549 - 2⁸ = 1226293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613274 + 613275.

It is an arithmetic number, because the mean of its divisors is an integer number (613275).

2^1226549 is an apocalyptic number.

It is an amenable number.

1226549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226549 is an equidigital number, since it uses as much as digits as its factorization.

1226549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 1226549 is about 1107.4967268575. The cubic root of 1226549 is about 107.0438286689.

The spelling of 1226549 in words is "one million, two hundred twenty-six thousand, five hundred forty-nine".