11372161 has 2 divisors, whose sum is σ = 11372162. Its totient is φ = 11372160.

The previous prime is 11372131. The next prime is 11372171. The reversal of 11372161 is 16127311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5760000 + 5612161 = 2400^2 + 2369^2 .

It is an emirp because it is prime and its reverse (16127311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11372161 - 2⁷ = 11372033 is a prime.

It is a super-3 number, since 3×11372161³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11372131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5686080 + 5686081.

It is an arithmetic number, because the mean of its divisors is an integer number (5686081).

Almost surely, 2^11372161 is an apocalyptic number.

It is an amenable number.

11372161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11372161 is an equidigital number, since it uses as much as digits as its factorization.

11372161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 11372161 is about 3372.2634831816. The cubic root of 11372161 is about 224.8783605886.

Adding to 11372161 its reverse (16127311), we get a palindrome (27499472).

The spelling of 11372161 in words is "eleven million, three hundred seventy-two thousand, one hundred sixty-one".