9215155 has 8 divisors (see below), whose sum is σ = 11210112. Its totient is φ = 7270848.

The previous prime is 9215137. The next prime is 9215159. The reversal of 9215155 is 5515129.

9215155 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 a cyclic number.

It is not a de Polignac number, because 9215155 - 2⁷ = 9215027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9215159) 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, 12259 + ... + 12988.

It is an arithmetic number, because the mean of its divisors is an integer number (1401264).

Almost surely, 2^9215155 is an apocalyptic number.

9215155 is a deficient number, since it is larger than the sum of its proper divisors (1994957).

9215155 is a wasteful number, since it uses less digits than its factorization.

9215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25325.

The product of its digits is 2250, while the sum is 28.

The square root of 9215155 is about 3035.6473774139. The cubic root of 9215155 is about 209.6529035675.

The spelling of 9215155 in words is "nine million, two hundred fifteen thousand, one hundred fifty-five".