1125530 has 24 divisors (see below), whose sum is σ = 2357748. Its totient is φ = 385728.

The previous prime is 1125529. The next prime is 1125539. The reversal of 1125530 is 355211.

It can be written as a sum of positive squares in 2 ways, for example, as 1117249 + 8281 = 1057^2 + 91^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1125499 and 1125508.

It is not an unprimeable number, because it can be changed into a prime (1125539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659 + ... + 1638.

2^1125530 is an apocalyptic number.

1125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1125530 is an abundant number, since it is smaller than the sum of its proper divisors (1232218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125530 is a wasteful number, since it uses less digits than its factorization.

1125530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318 (or 2311 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1125530 is about 1060.9099867567. The cubic root of 1125530 is about 104.0205210985.

Multiplying 1125530 by its product of nonzero digits (150), we get a triangular number (168829500 = T₁₈₃₇₅).

The spelling of 1125530 in words is "one million, one hundred twenty-five thousand, five hundred thirty".