11154391 has 2 divisors, whose sum is σ = 11154392. Its totient is φ = 11154390.

The previous prime is 11154383. The next prime is 11154401. The reversal of 11154391 is 19345111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11154391 - 2³ = 11154383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11154331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577195 + 5577196.

It is an arithmetic number, because the mean of its divisors is an integer number (5577196).

Almost surely, 2^11154391 is an apocalyptic number.

11154391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11154391 is an equidigital number, since it uses as much as digits as its factorization.

11154391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 25.

The square root of 11154391 is about 3339.8190070721. The cubic root of 11154391 is about 223.4336711587.

The spelling of 11154391 in words is "eleven million, one hundred fifty-four thousand, three hundred ninety-one".