12551647 has 8 divisors (see below), whose sum is σ = 13250160. Its totient is φ = 11856960.

The previous prime is 12551641. The next prime is 12551653. The reversal of 12551647 is 74615521.

It is an interprime number because it is at equal distance from previous prime (12551641) and next prime (12551653).

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 12551647 - 2³ = 12551639 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 (12551641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8043 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (1656270).

Almost surely, 2^12551647 is an apocalyptic number.

12551647 is a deficient number, since it is larger than the sum of its proper divisors (698513).

12551647 is a wasteful number, since it uses less digits than its factorization.

12551647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913.

The product of its digits is 8400, while the sum is 31.

The square root of 12551647 is about 3542.8303656822. The cubic root of 12551647 is about 232.3986346585.

The spelling of 12551647 in words is "twelve million, five hundred fifty-one thousand, six hundred forty-seven".