505450 has 24 divisors (see below), whose sum is σ = 1026720. Its totient is φ = 183600.

The previous prime is 505447. The next prime is 505459. The reversal of 505450 is 54505.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (505459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (42780).

2⁵⁰⁵⁴⁵⁰ is an apocalyptic number.

505450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505450 is an abundant number, since it is smaller than the sum of its proper divisors (521270).

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

505450 is a wasteful number, since it uses less digits than its factorization.

505450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 505450 is about 710.9500685702. The cubic root of 505450 is about 79.6573889824.

Adding to 505450 its reverse (54505), we get a palindrome (559955).

The spelling of 505450 in words is "five hundred five thousand, four hundred fifty".