1543223532 has 12 divisors (see below), whose sum is σ = 3600854936. Its totient is φ = 514407840.

The previous prime is 1543223503. The next prime is 1543223533. The reversal of 1543223532 is 2353223451.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1543223532.

It is not an unprimeable number, because it can be changed into a prime (1543223533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64300969 + ... + 64300992.

Almost surely, 2^1543223532 is an apocalyptic number.

1543223532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1543223532 is an abundant number, since it is smaller than the sum of its proper divisors (2057631404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1543223532 is a wasteful number, since it uses less digits than its factorization.

1543223532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128601968 (or 128601966 counting only the distinct ones).

The product of its digits is 21600, while the sum is 30.

The square root of 1543223532 is about 39283.8838711246. The cubic root of 1543223532 is about 1155.6055324470.

Adding to 1543223532 its reverse (2353223451), we get a palindrome (3896446983).

The spelling of 1543223532 in words is "one billion, five hundred forty-three million, two hundred twenty-three thousand, five hundred thirty-two".