1223554547 has 2 divisors, whose sum is σ = 1223554548. Its totient is φ = 1223554546.

The previous prime is 1223554499. The next prime is 1223554561. The reversal of 1223554547 is 7454553221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223554547 - 2¹⁸ = 1223292403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223554547.

It is not a weakly prime, because it can be changed into another prime (1223550547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611777273 + 611777274.

It is an arithmetic number, because the mean of its divisors is an integer number (611777274).

Almost surely, 2^1223554547 is an apocalyptic number.

1223554547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223554547 is an equidigital number, since it uses as much as digits as its factorization.

1223554547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 38.

The square root of 1223554547 is about 34979.3445764783. The cubic root of 1223554547 is about 1069.5664668701.

The spelling of 1223554547 in words is "one billion, two hundred twenty-three million, five hundred fifty-four thousand, five hundred forty-seven".