11551139 has 2 divisors, whose sum is σ = 11551140. Its totient is φ = 11551138.

The previous prime is 11551123. The next prime is 11551147. The reversal of 11551139 is 93115511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11551139 - 2⁴ = 11551123 is a prime.

It is not a weakly prime, because it can be changed into another prime (11511139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775569 + 5775570.

It is an arithmetic number, because the mean of its divisors is an integer number (5775570).

Almost surely, 2^11551139 is an apocalyptic number.

11551139 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551139 is an equidigital number, since it uses as much as digits as its factorization.

11551139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 675, while the sum is 26.

The square root of 11551139 is about 3398.6966619573. The cubic root of 11551139 is about 226.0519563632.

The spelling of 11551139 in words is "eleven million, five hundred fifty-one thousand, one hundred thirty-nine".