11551247 has 2 divisors, whose sum is σ = 11551248. Its totient is φ = 11551246.

The previous prime is 11551229. The next prime is 11551249. The reversal of 11551247 is 74215511.

It is a strong prime.

It is an emirp because it is prime and its reverse (74215511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11551247 - 2¹⁰ = 11550223 is a prime.

Together with 11551249, 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 (11551249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775623 + 5775624.

It is an arithmetic number, because the mean of its divisors is an integer number (5775624).

Almost surely, 2^11551247 is an apocalyptic number.

11551247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551247 is an equidigital number, since it uses as much as digits as its factorization.

11551247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 26.

The square root of 11551247 is about 3398.7125503637. The cubic root of 11551247 is about 226.0526608691.

Subtracting from 11551247 its sum of digits (26), we obtain a triangular number (11551221 = T₄₈₀₆).

Adding to 11551247 its reverse (74215511), we get a palindrome (85766758).

The spelling of 11551247 in words is "eleven million, five hundred fifty-one thousand, two hundred forty-seven".