1123553133 has 16 divisors (see below), whose sum is σ = 1667145600. Its totient is φ = 747855360.

The previous prime is 1123553111. The next prime is 1123553141. The reversal of 1123553133 is 3313553211.

1123553133 is a `hidden beast` number, since 1 + 123 + 5 + 531 + 3 + 3 = 666.

It is not a de Polignac number, because 1123553133 - 2⁸ = 1123552877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1123553097 and 1123553106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123553033) 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, 15153 + ... + 49766.

It is an arithmetic number, because the mean of its divisors is an integer number (104196600).

Almost surely, 2^1123553133 is an apocalyptic number.

It is an amenable number.

1123553133 is a deficient number, since it is larger than the sum of its proper divisors (543592467).

1123553133 is an equidigital number, since it uses as much as digits as its factorization.

1123553133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65569 (or 65563 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 1123553133 is about 33519.4441033857. Note that the first 3 decimals coincide. The cubic root of 1123553133 is about 1039.5958528911.

The spelling of 1123553133 in words is "one billion, one hundred twenty-three million, five hundred fifty-three thousand, one hundred thirty-three".