11551847 has 2 divisors, whose sum is σ = 11551848. Its totient is φ = 11551846.

The previous prime is 11551843. The next prime is 11551849. The reversal of 11551847 is 74815511.

11551847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11551847 - 2² = 11551843 is a prime.

It is a super-2 number, since 2×11551847² = 266890338222818, which contains 22 as substring.

Together with 11551849, 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 (11551843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775923 + 5775924.

It is an arithmetic number, because the mean of its divisors is an integer number (5775924).

Almost surely, 2^11551847 is an apocalyptic number.

11551847 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551847 is an equidigital number, since it uses as much as digits as its factorization.

11551847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5600, while the sum is 32.

The square root of 11551847 is about 3398.8008179356. The cubic root of 11551847 is about 226.0565747105.

The spelling of 11551847 in words is "eleven million, five hundred fifty-one thousand, eight hundred forty-seven".