11172151 has 2 divisors, whose sum is σ = 11172152. Its totient is φ = 11172150.

The previous prime is 11172149. The next prime is 11172157. The reversal of 11172151 is 15127111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11172151 - 2¹ = 11172149 is a prime.

Together with 11172149, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11172157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586075 + 5586076.

It is an arithmetic number, because the mean of its divisors is an integer number (5586076).

Almost surely, 2^11172151 is an apocalyptic number.

11172151 is a deficient number, since it is larger than the sum of its proper divisors (1).

11172151 is an equidigital number, since it uses as much as digits as its factorization.

11172151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70, while the sum is 19.

The square root of 11172151 is about 3342.4767762843. The cubic root of 11172151 is about 223.5521918327.

Adding to 11172151 its reverse (15127111), we get a palindrome (26299262).

The spelling of 11172151 in words is "eleven million, one hundred seventy-two thousand, one hundred fifty-one".