505005601 has 4 divisors (see below), whose sum is σ = 509908672. Its totient is φ = 500102532.

The previous prime is 505005583. The next prime is 505005607. The reversal of 505005601 is 106500505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106500505 = 5 ⋅21300101.

It is a cyclic number.

It is not a de Polignac number, because 505005601 - 2¹¹ = 505003553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505005607) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2451381 + ... + 2451586.

It is an arithmetic number, because the mean of its divisors is an integer number (127477168).

Almost surely, 2^505005601 is an apocalyptic number.

It is an amenable number.

505005601 is a deficient number, since it is larger than the sum of its proper divisors (4903071).

505005601 is a wasteful number, since it uses less digits than its factorization.

505005601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903070.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 505005601 is about 22472.3296745131. The cubic root of 505005601 is about 796.3403682512.

The spelling of 505005601 in words is "five hundred five million, five thousand, six hundred one".