505494 has 64 divisors (see below), whose sum is σ = 1313280. Its totient is φ = 142560.
The previous prime is 505493. The next prime is 505501. The reversal of 505494 is 494505.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an alternating number because its digits alternate between odd and even.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505494.
It is not an unprimeable number, because it can be changed into a prime (505493) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13644 + ... + 13680.
It is an arithmetic number, because the mean of its divisors is an integer number (20520).
2505494 is an apocalyptic number.
505494 is a gapful number since it is divisible by the number (54) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 505494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656640).
505494 is an abundant number, since it is smaller than the sum of its proper divisors (807786).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
505494 is a wasteful number, since it uses less digits than its factorization.
505494 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 82 (or 76 counting only the distinct ones).
The product of its (nonzero) digits is 3600, while the sum is 27.
The square root of 505494 is about 710.9810124047. The cubic root of 505494 is about 79.6597003376.
Adding to 505494 its sum of digits (27), we get a square (505521 = 7112).
Adding to 505494 its reverse (494505), we get a palindrome (999999).
It can be divided in two parts, 505 and 494, that added together give a palindrome (999).
The spelling of 505494 in words is "five hundred five thousand, four hundred ninety-four".
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