505000072 has 8 divisors (see below), whose sum is σ = 946875150. Its totient is φ = 252500032.

The previous prime is 505000043. The next prime is 505000073. The reversal of 505000072 is 270000505.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 362293156 + 142706916 = 19034^2 + 11946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (505000073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31562497 + ... + 31562512.

Almost surely, 2^505000072 is an apocalyptic number.

It is an amenable number.

505000072 is a deficient number, since it is larger than the sum of its proper divisors (441875078).

505000072 is a wasteful number, since it uses less digits than its factorization.

505000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63125015 (or 63125011 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 505000072 is about 22472.2066562231. The cubic root of 505000072 is about 796.3374620247.

Adding to 505000072 its reverse (270000505), we get a palindrome (775000577).

The spelling of 505000072 in words is "five hundred five million, seventy-two", and thus it is an aban number.