12155087 has 6 divisors (see below), whose sum is σ = 14139648. Its totient is φ = 10418604.

The previous prime is 12155081. The next prime is 12155123. The reversal of 12155087 is 78055121.

It is not a de Polignac number, because 12155087 - 2⁶ = 12155023 is a prime.

It is a super-2 number, since 2×12155087² = 295492279955138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123983 + ... + 124080.

It is an arithmetic number, because the mean of its divisors is an integer number (2356608).

Almost surely, 2^12155087 is an apocalyptic number.

12155087 is a deficient number, since it is larger than the sum of its proper divisors (1984561).

12155087 is an equidigital number, since it uses as much as digits as its factorization.

12155087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248077 (or 248070 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 12155087 is about 3486.4146339757. The cubic root of 12155087 is about 229.9249093244.

The spelling of 12155087 in words is "twelve million, one hundred fifty-five thousand, eighty-seven".