9215901 has 12 divisors (see below), whose sum is σ = 13595712. Its totient is φ = 6012936.

The previous prime is 9215891. The next prime is 9215909. The reversal of 9215901 is 1095129.

It is a happy number.

9215901 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9215901 - 2⁶ = 9215837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9215909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10471 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (1132976).

Almost surely, 2^9215901 is an apocalyptic number.

It is an amenable number.

9215901 is a deficient number, since it is larger than the sum of its proper divisors (4379811).

9215901 is a wasteful number, since it uses less digits than its factorization.

9215901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21840 (or 21837 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 9215901 is about 3035.7702482237. The cubic root of 9215901 is about 209.6585608008.

The spelling of 9215901 in words is "nine million, two hundred fifteen thousand, nine hundred one".