1125553 has 16 divisors (see below), whose sum is σ = 1403136. Its totient is φ = 887040.

The previous prime is 1125539. The next prime is 1125557. The reversal of 1125553 is 3555211.

It is a de Polignac number, because none of the positive numbers 2^k-1125553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2200 + ... + 2662.

It is an arithmetic number, because the mean of its divisors is an integer number (87696).

2^1125553 is an apocalyptic number.

1125553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1125553 is a deficient number, since it is larger than the sum of its proper divisors (277583).

1125553 is a wasteful number, since it uses less digits than its factorization.

1125553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its digits is 750, while the sum is 22.

The square root of 1125553 is about 1060.9208264522. The cubic root of 1125553 is about 104.0212296404.

It can be divided in two parts, 112 and 5553, that added together give a palindrome (5665).

The spelling of 1125553 in words is "one million, one hundred twenty-five thousand, five hundred fifty-three".