501400000 has 168 divisors, whose sum is σ = 1309603680. Its totient is φ = 190080000.

The previous prime is 501399991. The next prime is 501400007. The reversal of 501400000 is 4105.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 501400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501400007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4599946 + ... + 4600054.

It is an arithmetic number, because the mean of its divisors is an integer number (7795260).

Almost surely, 2^501400000 is an apocalyptic number.

501400000 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 501400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654801840).

501400000 is an abundant number, since it is smaller than the sum of its proper divisors (808203680).

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

501400000 is an equidigital number, since it uses as much as digits as its factorization.

501400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 501400000 is about 22391.9628438420. The cubic root of 501400000 is about 794.4406228138.

Adding to 501400000 its reverse (4105), we get a palindrome (501404105).

The spelling of 501400000 in words is "five hundred one million, four hundred thousand".