505601101 has 4 divisors (see below), whose sum is σ = 505668604. Its totient is φ = 505533600.

The previous prime is 505601099. The next prime is 505601113. The reversal of 505601101 is 101106505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37527876 + 468073225 = 6126^2 + 21635^2 .

It is a cyclic number.

It is not a de Polignac number, because 505601101 - 2¹ = 505601099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505601141) 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, 20880 + ... + 38041.

It is an arithmetic number, because the mean of its divisors is an integer number (126417151).

Almost surely, 2^505601101 is an apocalyptic number.

It is an amenable number.

505601101 is a deficient number, since it is larger than the sum of its proper divisors (67503).

505601101 is an equidigital number, since it uses as much as digits as its factorization.

505601101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67502.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 505601101 is about 22485.5753984638. The cubic root of 505601101 is about 796.6532587820.

Adding to 505601101 its reverse (101106505), we get a palindrome (606707606).

The spelling of 505601101 in words is "five hundred five million, six hundred one thousand, one hundred one".