9321157 has 4 divisors (see below), whose sum is σ = 9360076. Its totient is φ = 9282240.

The previous prime is 9321139. The next prime is 9321161. The reversal of 9321157 is 7511239.

9321157 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7511239 = 149 ⋅50411.

It can be written as a sum of positive squares in 2 ways, for example, as 3101121 + 6220036 = 1761^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 9321157 - 2⁷ = 9321029 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9321127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19098 + ... + 19579.

It is an arithmetic number, because the mean of its divisors is an integer number (2340019).

Almost surely, 2^9321157 is an apocalyptic number.

It is an amenable number.

9321157 is a deficient number, since it is larger than the sum of its proper divisors (38919).

9321157 is a wasteful number, since it uses less digits than its factorization.

9321157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38918.

The product of its digits is 1890, while the sum is 28.

The square root of 9321157 is about 3053.0569925896. The cubic root of 9321157 is about 210.4537204338.

The spelling of 9321157 in words is "nine million, three hundred twenty-one thousand, one hundred fifty-seven".