505443144 has 16 divisors (see below), whose sum is σ = 1263607920. Its totient is φ = 168481040.

The previous prime is 505443143. The next prime is 505443151. The reversal of 505443144 is 441344505.

It is not an unprimeable number, because it can be changed into a prime (505443143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10530042 + ... + 10530089.

It is an arithmetic number, because the mean of its divisors is an integer number (78975495).

Almost surely, 2^505443144 is an apocalyptic number.

It is an amenable number.

505443144 is an abundant number, since it is smaller than the sum of its proper divisors (758164776).

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

505443144 is a wasteful number, since it uses less digits than its factorization.

505443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21060140 (or 21060136 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 505443144 is about 22482.0627167527. The cubic root of 505443144 is about 796.5702881917.

Adding to 505443144 its reverse (441344505), we get a palindrome (946787649).

The spelling of 505443144 in words is "five hundred five million, four hundred forty-three thousand, one hundred forty-four".