505693401 has 8 divisors (see below), whose sum is σ = 680444160. Its totient is φ = 334035792.

The previous prime is 505693399. The next prime is 505693403. The reversal of 505693401 is 104396505.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (505693399) and next prime (505693403).

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

It is not a de Polignac number, because 505693401 - 2¹ = 505693399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505693403) 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 7 ways as a sum of consecutive naturals, for example, 772905 + ... + 773558.

It is an arithmetic number, because the mean of its divisors is an integer number (85055520).

Almost surely, 2^505693401 is an apocalyptic number.

It is an amenable number.

505693401 is a deficient number, since it is larger than the sum of its proper divisors (174750759).

505693401 is a wasteful number, since it uses less digits than its factorization.

505693401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546575.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 505693401 is about 22487.6277317106. The cubic root of 505693401 is about 796.7017335062.

The spelling of 505693401 in words is "five hundred five million, six hundred ninety-three thousand, four hundred one".