11172251 has 2 divisors, whose sum is σ = 11172252. Its totient is φ = 11172250.

The previous prime is 11172233. The next prime is 11172253. The reversal of 11172251 is 15227111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11172251 - 2¹⁴ = 11155867 is a prime.

Together with 11172253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11172253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586125 + 5586126.

It is an arithmetic number, because the mean of its divisors is an integer number (5586126).

Almost surely, 2^11172251 is an apocalyptic number.

11172251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11172251 is an equidigital number, since it uses as much as digits as its factorization.

11172251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 140, while the sum is 20.

The square root of 11172251 is about 3342.4917352179. The cubic root of 11172251 is about 223.5528588231.

Adding to 11172251 its reverse (15227111), we get a palindrome (26399362).

The spelling of 11172251 in words is "eleven million, one hundred seventy-two thousand, two hundred fifty-one".