8121601 has 8 divisors (see below), whose sum is σ = 8307008. Its totient is φ = 7938000.

The previous prime is 8121587. The next prime is 8121613. The reversal of 8121601 is 1061218.

8121601 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 8121601 - 2⁹ = 8121089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8121671) 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, 12556 + ... + 13186.

It is an arithmetic number, because the mean of its divisors is an integer number (1038376).

Almost surely, 2^8121601 is an apocalyptic number.

It is an amenable number.

8121601 is a deficient number, since it is larger than the sum of its proper divisors (185407).

8121601 is a wasteful number, since it uses less digits than its factorization.

8121601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 8121601 is about 2849.8422763374. The cubic root of 8121601 is about 201.0082502822.

Adding to 8121601 its reverse (1061218), we get a palindrome (9182819).

The spelling of 8121601 in words is "eight million, one hundred twenty-one thousand, six hundred one".