7197161 has 4 divisors (see below), whose sum is σ = 7263300. Its totient is φ = 7131024.

The previous prime is 7197139. The next prime is 7197209. The reversal of 7197161 is 1617917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1617917 = 7 ⋅231131.

It can be written as a sum of positive squares in 2 ways, for example, as 1907161 + 5290000 = 1381^2 + 2300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7197161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7197101) 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, 32906 + ... + 33123.

It is an arithmetic number, because the mean of its divisors is an integer number (1815825).

Almost surely, 2^7197161 is an apocalyptic number.

It is an amenable number.

7197161 is a deficient number, since it is larger than the sum of its proper divisors (66139).

7197161 is a wasteful number, since it uses less digits than its factorization.

7197161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66138.

The product of its digits is 2646, while the sum is 32.

The square root of 7197161 is about 2682.7525044253. The cubic root of 7197161 is about 193.0724937294.

The spelling of 7197161 in words is "seven million, one hundred ninety-seven thousand, one hundred sixty-one".