11535551 has 2 divisors, whose sum is σ = 11535552. Its totient is φ = 11535550.

The previous prime is 11535547. The next prime is 11535593. The reversal of 11535551 is 15553511.

11535551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11535551 - 2² = 11535547 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11535551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11535541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767775 + 5767776.

It is an arithmetic number, because the mean of its divisors is an integer number (5767776).

Almost surely, 2^11535551 is an apocalyptic number.

11535551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11535551 is an equidigital number, since it uses as much as digits as its factorization.

11535551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1875, while the sum is 26.

The square root of 11535551 is about 3396.4026557521. The cubic root of 11535551 is about 225.9502265934.

The spelling of 11535551 in words is "eleven million, five hundred thirty-five thousand, five hundred fifty-one".