523450000 has 180 divisors, whose sum is σ = 1384012980. Its totient is φ = 191520000.

The previous prime is 523449959. The next prime is 523450003. The reversal of 523450000 is 54325.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 427331584 + 96118416 = 20672^2 + 9804^2 .

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 523450000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523450003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18049986 + ... + 18050014.

It is an arithmetic number, because the mean of its divisors is an integer number (7688961).

Almost surely, 2^523450000 is an apocalyptic number.

523450000 is a gapful number since it is divisible by the number (50) 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 523450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692006490).

523450000 is an abundant number, since it is smaller than the sum of its proper divisors (860562980).

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

523450000 is an equidigital number, since it uses as much as digits as its factorization.

523450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 523450000 is about 22879.0296997054. The cubic root of 523450000 is about 805.9196310869.

The spelling of 523450000 in words is "five hundred twenty-three million, four hundred fifty thousand".