1123522000 has 40 divisors (see below), whose sum is σ = 2716681032. Its totient is φ = 449408000.

The previous prime is 1123521977. The next prime is 1123522007. The reversal of 1123522000 is 2253211.

It can be written as a sum of positive squares in 4 ways, for example, as 467856 + 1123054144 = 684^2 + 33512^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123522007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278881 + ... + 282880.

Almost surely, 2^1123522000 is an apocalyptic number.

1123522000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123522000 is an abundant number, since it is smaller than the sum of its proper divisors (1593159032).

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

1123522000 is an equidigital number, since it uses as much as digits as its factorization.

1123522000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561784 (or 561768 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1123522000 is about 33518.9796980755. The cubic root of 1123522000 is about 1039.5862506048.

Adding to 1123522000 its reverse (2253211), we get a palindrome (1125775211).

The spelling of 1123522000 in words is "one billion, one hundred twenty-three million, five hundred twenty-two thousand".