505585401 has 4 divisors (see below), whose sum is σ = 674113872. Its totient is φ = 337056932.

The previous prime is 505585397. The next prime is 505585411. The reversal of 505585401 is 104585505.

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.

It is a cyclic number.

It is not a de Polignac number, because 505585401 - 2² = 505585397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505585411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84264231 + ... + 84264236.

It is an arithmetic number, because the mean of its divisors is an integer number (168528468).

Almost surely, 2^505585401 is an apocalyptic number.

It is an amenable number.

505585401 is a deficient number, since it is larger than the sum of its proper divisors (168528471).

505585401 is a wasteful number, since it uses less digits than its factorization.

505585401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168528470.

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 505585401 is about 22485.2262830508. The cubic root of 505585401 is about 796.6450127652.

The spelling of 505585401 in words is "five hundred five million, five hundred eighty-five thousand, four hundred one".