12117573 has 64 divisors (see below), whose sum is σ = 21504000. Its totient is φ = 6671808.

The previous prime is 12117571. The next prime is 12117607. The reversal of 12117573 is 37571121.

It is a happy number.

12117573 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12117573 - 2¹ = 12117571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117571) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153348 + ... + 153426.

It is an arithmetic number, because the mean of its divisors is an integer number (336000).

Almost surely, 2^12117573 is an apocalyptic number.

12117573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12117573 is a deficient number, since it is larger than the sum of its proper divisors (9386427).

12117573 is a wasteful number, since it uses less digits than its factorization.

12117573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 137 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 12117573 is about 3481.0304508866. The cubic root of 12117573 is about 229.6881280283.

Adding to 12117573 its reverse (37571121), we get a palindrome (49688694).

The spelling of 12117573 in words is "twelve million, one hundred seventeen thousand, five hundred seventy-three".