505511340 has 48 divisors (see below), whose sum is σ = 1489931520. Its totient is φ = 127707840.

The previous prime is 505511333. The next prime is 505511393. The reversal of 505511340 is 43115505.

It is a self number, because there is not a number n which added to its sum of digits gives 505511340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220576 + ... + 222855.

It is an arithmetic number, because the mean of its divisors is an integer number (31040240).

Almost surely, 2^505511340 is an apocalyptic number.

It is an amenable number.

505511340 is an abundant number, since it is smaller than the sum of its proper divisors (984420180).

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

505511340 is a wasteful number, since it uses less digits than its factorization.

505511340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443462 (or 443460 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 505511340 is about 22483.5793413771. The cubic root of 505511340 is about 796.6061118480.

Adding to 505511340 its reverse (43115505), we get a palindrome (548626845).

The spelling of 505511340 in words is "five hundred five million, five hundred eleven thousand, three hundred forty".