505351420 has 48 divisors (see below), whose sum is σ = 1215244800. Its totient is φ = 172920384.

The previous prime is 505351411. The next prime is 505351421. The reversal of 505351420 is 24153505.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505351421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73281 + ... + 79879.

It is an arithmetic number, because the mean of its divisors is an integer number (25317600).

Almost surely, 2^505351420 is an apocalyptic number.

It is an amenable number.

505351420 is an abundant number, since it is smaller than the sum of its proper divisors (709893380).

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

505351420 is a wasteful number, since it uses less digits than its factorization.

505351420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162 (or 7160 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 505351420 is about 22480.0226868213. The cubic root of 505351420 is about 796.5221000923.

The spelling of 505351420 in words is "five hundred five million, three hundred fifty-one thousand, four hundred twenty".