11125553 has 2 divisors, whose sum is σ = 11125554. Its totient is φ = 11125552.

The previous prime is 11125549. The next prime is 11125613. The reversal of 11125553 is 35552111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5895184 + 5230369 = 2428^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 11125553 - 2² = 11125549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11125253) 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, 5562776 + 5562777.

It is an arithmetic number, because the mean of its divisors is an integer number (5562777).

Almost surely, 2^11125553 is an apocalyptic number.

It is an amenable number.

11125553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11125553 is an equidigital number, since it uses as much as digits as its factorization.

11125553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 750, while the sum is 23.

The square root of 11125553 is about 3335.4989132062. The cubic root of 11125553 is about 223.2409536004.

Adding to 11125553 its reverse (35552111), we get a palindrome (46677664).

The spelling of 11125553 in words is "eleven million, one hundred twenty-five thousand, five hundred fifty-three".