505599506 has 4 divisors (see below), whose sum is σ = 758399262. Its totient is φ = 252799752.

The previous prime is 505599463. The next prime is 505599517. The reversal of 505599506 is 605995505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605995505 = 5 ⋅121199101.

It can be written as a sum of positive squares in only one way, i.e., 344436481 + 161163025 = 18559^2 + 12695^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 126399875 + ... + 126399878.

Almost surely, 2^505599506 is an apocalyptic number.

505599506 is a deficient number, since it is larger than the sum of its proper divisors (252799756).

505599506 is a wasteful number, since it uses less digits than its factorization.

505599506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252799755.

The product of its (nonzero) digits is 303750, while the sum is 44.

The square root of 505599506 is about 22485.5399312536. The cubic root of 505599506 is about 796.6524210575.

The spelling of 505599506 in words is "five hundred five million, five hundred ninety-nine thousand, five hundred six".