531650000 has 240 divisors, whose sum is σ = 1549900800. Its totient is φ = 176400000.

The previous prime is 531649997. The next prime is 531650017. The reversal of 531650000 is 56135.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17149985 + ... + 17150015.

It is an arithmetic number, because the mean of its divisors is an integer number (6457920).

Almost surely, 2^531650000 is an apocalyptic number.

531650000 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 531650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774950400).

531650000 is an abundant number, since it is smaller than the sum of its proper divisors (1018250800).

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

531650000 is an frugal number, since it uses more digits than its factorization.

531650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 531650000 is about 23057.5367288008. The cubic root of 531650000 is about 810.1061690841.

The spelling of 531650000 in words is "five hundred thirty-one million, six hundred fifty thousand".