12151977 has 8 divisors (see below), whose sum is σ = 16236864. Its totient is φ = 8084208.

The previous prime is 12151973. The next prime is 12151987. The reversal of 12151977 is 77915121.

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

It is not a de Polignac number, because 12151977 - 2² = 12151973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12151973) 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, 2518 + ... + 5535.

It is an arithmetic number, because the mean of its divisors is an integer number (2029608).

Almost surely, 2^12151977 is an apocalyptic number.

It is an amenable number.

12151977 is a deficient number, since it is larger than the sum of its proper divisors (4084887).

12151977 is an equidigital number, since it uses as much as digits as its factorization.

12151977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559.

The product of its digits is 4410, while the sum is 33.

The square root of 12151977 is about 3485.9685884988. The cubic root of 12151977 is about 229.9052981262.

The spelling of 12151977 in words is "twelve million, one hundred fifty-one thousand, nine hundred seventy-seven".