11545553 has 2 divisors, whose sum is σ = 11545554. Its totient is φ = 11545552.

The previous prime is 11545537. The next prime is 11545561. The reversal of 11545553 is 35554511.

11545553 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 can be written as a sum of positive squares in only one way, i.e., 7573504 + 3972049 = 2752^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 11545553 - 2⁴ = 11545537 is a prime.

It is not a weakly prime, because it can be changed into another prime (11545153) 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, 5772776 + 5772777.

It is an arithmetic number, because the mean of its divisors is an integer number (5772777).

Almost surely, 2^11545553 is an apocalyptic number.

It is an amenable number.

11545553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11545553 is an equidigital number, since it uses as much as digits as its factorization.

11545553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7500, while the sum is 29.

The square root of 11545553 is about 3397.8747769746. The cubic root of 11545553 is about 226.0155117659.

The spelling of 11545553 in words is "eleven million, five hundred forty-five thousand, five hundred fifty-three".