8815121 has 8 divisors (see below), whose sum is σ = 10152384. Its totient is φ = 7497360.

The previous prime is 8815117. The next prime is 8815127. The reversal of 8815121 is 1215188.

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 8815121 - 2² = 8815117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8815127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3890 + ... + 5723.

It is an arithmetic number, because the mean of its divisors is an integer number (1269048).

Almost surely, 2^8815121 is an apocalyptic number.

It is an amenable number.

8815121 is a deficient number, since it is larger than the sum of its proper divisors (1337263).

8815121 is a wasteful number, since it uses less digits than its factorization.

8815121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9751.

The product of its digits is 640, while the sum is 26.

The square root of 8815121 is about 2969.0269449771. The cubic root of 8815121 is about 206.5742062413.

The spelling of 8815121 in words is "eight million, eight hundred fifteen thousand, one hundred twenty-one".