1228547 has 2 divisors, whose sum is σ = 1228548. Its totient is φ = 1228546.

The previous prime is 1228543. The next prime is 1228567. The reversal of 1228547 is 7458221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228547 - 2² = 1228543 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614273 + 614274.

It is an arithmetic number, because the mean of its divisors is an integer number (614274).

2^1228547 is an apocalyptic number.

1228547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228547 is an equidigital number, since it uses as much as digits as its factorization.

1228547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 1228547 is about 1108.3983940804. The cubic root of 1228547 is about 107.1019205304.

The spelling of 1228547 in words is "one million, two hundred twenty-eight thousand, five hundred forty-seven".