505530078 has 8 divisors (see below), whose sum is σ = 1011060168. Its totient is φ = 168510024.

The previous prime is 505530061. The next prime is 505530079. The reversal of 505530078 is 870035505.

It is a sphenic number, since it is the product of 3 distinct primes.

505530078 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505530079) 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, 42127501 + ... + 42127512.

It is an arithmetic number, because the mean of its divisors is an integer number (126382521).

Almost surely, 2^505530078 is an apocalyptic number.

505530078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

505530078 is a wasteful number, since it uses less digits than its factorization.

505530078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84255018.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 505530078 is about 22483.9960416293. The cubic root of 505530078 is about 796.6159544369.

The spelling of 505530078 in words is "five hundred five million, five hundred thirty thousand, seventy-eight".