1128553 has 2 divisors, whose sum is σ = 1128554. Its totient is φ = 1128552.

The previous prime is 1128539. The next prime is 1128557. The reversal of 1128553 is 3558211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 870489 + 258064 = 933^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128553 - 2⁵ = 1128521 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564276 + 564277.

It is an arithmetic number, because the mean of its divisors is an integer number (564277).

2^1128553 is an apocalyptic number.

It is an amenable number.

1128553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128553 is an equidigital number, since it uses as much as digits as its factorization.

1128553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The square root of 1128553 is about 1062.3337516995. Note that the first 3 decimals coincide. The cubic root of 1128553 is about 104.1135655396.

It can be divided in two parts, 1128 and 553, that added together give a square (1681 = 41²).

The spelling of 1128553 in words is "one million, one hundred twenty-eight thousand, five hundred fifty-three".