12091552 has 24 divisors (see below), whose sum is σ = 25970112. Its totient is φ = 5496000.

The previous prime is 12091517. The next prime is 12091559. The reversal of 12091552 is 25519021.

It is not an unprimeable number, because it can be changed into a prime (12091559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16824 + ... + 17527.

It is an arithmetic number, because the mean of its divisors is an integer number (1082088).

Almost surely, 2^12091552 is an apocalyptic number.

It is an amenable number.

12091552 is an abundant number, since it is smaller than the sum of its proper divisors (13878560).

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

12091552 is a wasteful number, since it uses less digits than its factorization.

12091552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34372 (or 34364 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 12091552 is about 3477.2908995366. The cubic root of 12091552 is about 229.5236011884.

The spelling of 12091552 in words is "twelve million, ninety-one thousand, five hundred fifty-two".