12087751 has 8 divisors (see below), whose sum is σ = 13466880. Its totient is φ = 10772832.

The previous prime is 12087749. The next prime is 12087767. The reversal of 12087751 is 15778021.

It is a happy number.

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 12087751 - 2¹ = 12087749 is a prime.

It is a super-2 number, since 2×12087751² = 292227448476002, 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 (12087791) 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, 15655 + ... + 16408.

It is an arithmetic number, because the mean of its divisors is an integer number (1683360).

Almost surely, 2^12087751 is an apocalyptic number.

12087751 is a deficient number, since it is larger than the sum of its proper divisors (1379129).

12087751 is a wasteful number, since it uses less digits than its factorization.

12087751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32105.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 12087751 is about 3476.7443104146. The cubic root of 12087751 is about 229.4995482893.

The spelling of 12087751 in words is "twelve million, eighty-seven thousand, seven hundred fifty-one".