1123522452 has 144 divisors (see below), whose sum is σ = 3256344000. Its totient is φ = 323564544.

The previous prime is 1123522409. The next prime is 1123522471. The reversal of 1123522452 is 2542253211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2251299 + ... + 2251797.

It is an arithmetic number, because the mean of its divisors is an integer number (22613500).

Almost surely, 2^1123522452 is an apocalyptic number.

1123522452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123522452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628172000).

1123522452 is an abundant number, since it is smaller than the sum of its proper divisors (2132821548).

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

1123522452 is a wasteful number, since it uses less digits than its factorization.

1123522452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 817 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1123522452 is about 33518.9864405235. The cubic root of 1123522452 is about 1039.5863900155.

Adding to 1123522452 its reverse (2542253211), we get a palindrome (3665775663).

The spelling of 1123522452 in words is "one billion, one hundred twenty-three million, five hundred twenty-two thousand, four hundred fifty-two".