505560121 has 8 divisors (see below), whose sum is σ = 569311488. Its totient is φ = 444774000.

The previous prime is 505560109. The next prime is 505560137. The reversal of 505560121 is 121065505.

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

It is not a de Polignac number, because 505560121 - 2⁵ = 505560089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505560101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740950 + ... + 741631.

It is an arithmetic number, because the mean of its divisors is an integer number (71163936).

Almost surely, 2^505560121 is an apocalyptic number.

It is an amenable number.

505560121 is a deficient number, since it is larger than the sum of its proper divisors (63751367).

505560121 is a wasteful number, since it uses less digits than its factorization.

505560121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482623.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 505560121 is about 22484.6641291348. The cubic root of 505560121 is about 796.6317347436.

The spelling of 505560121 in words is "five hundred five million, five hundred sixty thousand, one hundred twenty-one".