12155077 has 8 divisors (see below), whose sum is σ = 13325472. Its totient is φ = 10995600.

The previous prime is 12155057. The next prime is 12155081. The reversal of 12155077 is 77055121.

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

It is not a de Polignac number, because 12155077 - 2¹⁹ = 11630789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155057) by changing a digit.

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, 298 + ... + 4939.

It is an arithmetic number, because the mean of its divisors is an integer number (1665684).

Almost surely, 2^12155077 is an apocalyptic number.

It is an amenable number.

12155077 is a deficient number, since it is larger than the sum of its proper divisors (1170395).

12155077 is a wasteful number, since it uses less digits than its factorization.

12155077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 12155077 is about 3486.4131998373. The cubic root of 12155077 is about 229.9248462712.

The spelling of 12155077 in words is "twelve million, one hundred fifty-five thousand, seventy-seven".