501299400 has 432 divisors, whose sum is σ = 1952888400. Its totient is φ = 106014720.

The previous prime is 501299389. The next prime is 501299411. The reversal of 501299400 is 4992105.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (501299389) and next prime (501299411).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 8496571 + ... + 8496629.

It is an arithmetic number, because the mean of its divisors is an integer number (4520575).

Almost surely, 2^501299400 is an apocalyptic number.

501299400 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 501299400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976444200).

501299400 is an abundant number, since it is smaller than the sum of its proper divisors (1451589000).

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

501299400 is a wasteful number, since it uses less digits than its factorization.

501299400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 501299400 is about 22389.7163894499. The cubic root of 501299400 is about 794.3874875444.

The spelling of 501299400 in words is "five hundred one million, two hundred ninety-nine thousand, four hundred".