1074543221 has 2 divisors, whose sum is σ = 1074543222. Its totient is φ = 1074543220.

The previous prime is 1074543209. The next prime is 1074543247. The reversal of 1074543221 is 1223454701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701667121 + 372876100 = 26489^2 + 19310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1074543221 - 2¹⁸ = 1074281077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1074543251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537271610 + 537271611.

It is an arithmetic number, because the mean of its divisors is an integer number (537271611).

Almost surely, 2^1074543221 is an apocalyptic number.

It is an amenable number.

1074543221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1074543221 is an equidigital number, since it uses as much as digits as its factorization.

1074543221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1074543221 is about 32780.2260669447. The cubic root of 1074543221 is about 1024.2546938915.

Adding to 1074543221 its reverse (1223454701), we get a palindrome (2297997922).

The spelling of 1074543221 in words is "one billion, seventy-four million, five hundred forty-three thousand, two hundred twenty-one".