1215533452 has 24 divisors (see below), whose sum is σ = 2436366240. Its totient is φ = 519807360.

The previous prime is 1215533441. The next prime is 1215533453. The reversal of 1215533452 is 2543355121.

It is not an unprimeable number, because it can be changed into a prime (1215533453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34177 + ... + 59992.

It is an arithmetic number, because the mean of its divisors is an integer number (101515260).

Almost surely, 2^1215533452 is an apocalyptic number.

It is an amenable number.

1215533452 is an abundant number, since it is smaller than the sum of its proper divisors (1220832788).

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

1215533452 is a wasteful number, since it uses less digits than its factorization.

1215533452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94641 (or 94639 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 1215533452 is about 34864.5013158083. The cubic root of 1215533452 is about 1067.2241357275.

Adding to 1215533452 its reverse (2543355121), we get a palindrome (3758888573).

The spelling of 1215533452 in words is "one billion, two hundred fifteen million, five hundred thirty-three thousand, four hundred fifty-two".