12815601 has 8 divisors (see below), whose sum is σ = 17110464. Its totient is φ = 8532240.

The previous prime is 12815597. The next prime is 12815609. The reversal of 12815601 is 10651821.

12815601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12815601 - 2² = 12815597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12815609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196 + ... + 5066.

It is an arithmetic number, because the mean of its divisors is an integer number (2138808).

Almost surely, 2^12815601 is an apocalyptic number.

It is an amenable number.

12815601 is a deficient number, since it is larger than the sum of its proper divisors (4294863).

12815601 is an equidigital number, since it uses as much as digits as its factorization.

12815601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751.

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

The square root of 12815601 is about 3579.8884060820. Note that the first 3 decimals coincide. The cubic root of 12815601 is about 234.0164171402.

The spelling of 12815601 in words is "twelve million, eight hundred fifteen thousand, six hundred one".