505432540 has 12 divisors (see below), whose sum is σ = 1061408376. Its totient is φ = 202173008.

The previous prime is 505432537. The next prime is 505432549. The reversal of 505432540 is 45234505.

It is a junction number, because it is equal to n+sod(n) for n = 505432499 and 505432508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505432549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12635794 + ... + 12635833.

It is an arithmetic number, because the mean of its divisors is an integer number (88450698).

Almost surely, 2^505432540 is an apocalyptic number.

It is an amenable number.

505432540 is an abundant number, since it is smaller than the sum of its proper divisors (555975836).

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

505432540 is a wasteful number, since it uses less digits than its factorization.

505432540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25271636 (or 25271634 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 505432540 is about 22481.8268830627. The cubic root of 505432540 is about 796.5647175747.

The spelling of 505432540 in words is "five hundred five million, four hundred thirty-two thousand, five hundred forty".