12017955 has 8 divisors (see below), whose sum is σ = 19228752. Its totient is φ = 6409568.

The previous prime is 12017953. The next prime is 12017959. The reversal of 12017955 is 55971021.

12017955 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12017955 - 2¹ = 12017953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12017953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400584 + ... + 400613.

It is an arithmetic number, because the mean of its divisors is an integer number (2403594).

Almost surely, 2^12017955 is an apocalyptic number.

12017955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12017955 is a deficient number, since it is larger than the sum of its proper divisors (7210797).

12017955 is an equidigital number, since it uses as much as digits as its factorization.

12017955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801205.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 12017955 is about 3466.6922274699. The cubic root of 12017955 is about 229.0569768538.

Adding to 12017955 its reverse (55971021), we get a palindrome (67988976).

The spelling of 12017955 in words is "twelve million, seventeen thousand, nine hundred fifty-five".