12581601 has 8 divisors (see below), whose sum is σ = 16792224. Its totient is φ = 8379360.

The previous prime is 12581599. The next prime is 12581603. The reversal of 12581601 is 10618521.

It is an interprime number because it is at equal distance from previous prime (12581599) and next prime (12581603).

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

It is not a de Polignac number, because 12581601 - 2¹ = 12581599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12581603) 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, 3706 + ... + 6236.

It is an arithmetic number, because the mean of its divisors is an integer number (2099028).

Almost surely, 2^12581601 is an apocalyptic number.

It is an amenable number.

12581601 is a deficient number, since it is larger than the sum of its proper divisors (4210623).

12581601 is a wasteful number, since it uses less digits than its factorization.

12581601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4191.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 12581601 is about 3547.0552575341. The cubic root of 12581601 is about 232.5833577852.

The spelling of 12581601 in words is "twelve million, five hundred eighty-one thousand, six hundred one".