12117552 has 20 divisors (see below), whose sum is σ = 31303800. Its totient is φ = 4039168.

The previous prime is 12117551. The next prime is 12117569. The reversal of 12117552 is 25571121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12117551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126177 + ... + 126272.

It is an arithmetic number, because the mean of its divisors is an integer number (1565190).

Almost surely, 2^12117552 is an apocalyptic number.

12117552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12117552 is an abundant number, since it is smaller than the sum of its proper divisors (19186248).

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

12117552 is a wasteful number, since it uses less digits than its factorization.

12117552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252460 (or 252454 counting only the distinct ones).

The product of its digits is 700, while the sum is 24.

The square root of 12117552 is about 3481.0274345371. The cubic root of 12117552 is about 229.6879953435.

Adding to 12117552 its reverse (25571121), we get a palindrome (37688673).

The spelling of 12117552 in words is "twelve million, one hundred seventeen thousand, five hundred fifty-two".