505155506 has 8 divisors (see below), whose sum is σ = 776214684. Its totient is φ = 246417280.

The previous prime is 505155503. The next prime is 505155559. The reversal of 505155506 is 605551505.

It can be written as a sum of positive squares in 2 ways, for example, as 470239225 + 34916281 = 21685^2 + 5909^2 .

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

It is not an unprimeable number, because it can be changed into a prime (505155503) 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, 3080135 + ... + 3080298.

Almost surely, 2^505155506 is an apocalyptic number.

505155506 is a deficient number, since it is larger than the sum of its proper divisors (271059178).

505155506 is a wasteful number, since it uses less digits than its factorization.

505155506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160476.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 505155506 is about 22475.6647510146. The cubic root of 505155506 is about 796.4191552276.

The spelling of 505155506 in words is "five hundred five million, one hundred fifty-five thousand, five hundred six".