12158855 has 8 divisors (see below), whose sum is σ = 14618112. Its totient is φ = 9708768.

The previous prime is 12158849. The next prime is 12158863. The reversal of 12158855 is 55885121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12158855 is a prime.

It is a super-2 number, since 2×12158855² = 295675509822050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a congruent number.

It is an unprimeable number.

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, 1082 + ... + 5048.

It is an arithmetic number, because the mean of its divisors is an integer number (1827264).

Almost surely, 2^12158855 is an apocalyptic number.

12158855 is a deficient number, since it is larger than the sum of its proper divisors (2459257).

12158855 is an equidigital number, since it uses as much as digits as its factorization.

12158855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585.

The product of its digits is 16000, while the sum is 35.

The square root of 12158855 is about 3486.9549753331. The cubic root of 12158855 is about 229.9486652918.

The spelling of 12158855 in words is "twelve million, one hundred fifty-eight thousand, eight hundred fifty-five".