503533420 has 48 divisors (see below), whose sum is σ = 1154841408. Its totient is φ = 183294720.

The previous prime is 503533391. The next prime is 503533427. The reversal of 503533420 is 24335305.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (503533427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4822 + ... + 32098.

It is an arithmetic number, because the mean of its divisors is an integer number (24059196).

Almost surely, 2^503533420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503533420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577420704).

503533420 is an abundant number, since it is smaller than the sum of its proper divisors (651307988).

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

503533420 is a wasteful number, since it uses less digits than its factorization.

503533420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27370 (or 27368 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 503533420 is about 22439.5503520013. The cubic root of 503533420 is about 795.5657905595.

Adding to 503533420 its reverse (24335305), we get a palindrome (527868725).

The spelling of 503533420 in words is "five hundred three million, five hundred thirty-three thousand, four hundred twenty".