1223550543 has 8 divisors (see below), whose sum is σ = 1717264000. Its totient is φ = 772768728.

The previous prime is 1223550541. The next prime is 1223550547. The reversal of 1223550543 is 3450553221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223550543 - 2¹ = 1223550541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223550543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223550541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10732843 + ... + 10732956.

It is an arithmetic number, because the mean of its divisors is an integer number (214658000).

Almost surely, 2^1223550543 is an apocalyptic number.

1223550543 is a deficient number, since it is larger than the sum of its proper divisors (493713457).

1223550543 is a wasteful number, since it uses less digits than its factorization.

1223550543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21465821.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1223550543 is about 34979.2873426547. The cubic root of 1223550543 is about 1069.5653001741.

The spelling of 1223550543 in words is "one billion, two hundred twenty-three million, five hundred fifty thousand, five hundred forty-three".