505434401 has 8 divisors (see below), whose sum is σ = 512111808. Its totient is φ = 498790000.

The previous prime is 505434379. The next prime is 505434431. The reversal of 505434401 is 104434505.

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

It is a cyclic number.

It is not a de Polignac number, because 505434401 - 2¹⁰ = 505433377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505434431) 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, 23366 + ... + 39456.

It is an arithmetic number, because the mean of its divisors is an integer number (64013976).

Almost surely, 2^505434401 is an apocalyptic number.

It is an amenable number.

505434401 is a deficient number, since it is larger than the sum of its proper divisors (6677407).

505434401 is a wasteful number, since it uses less digits than its factorization.

505434401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16503.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 505434401 is about 22481.8682720098. The cubic root of 505434401 is about 796.5656952226.

Adding to 505434401 its reverse (104434505), we get a palindrome (609868906).

The spelling of 505434401 in words is "five hundred five million, four hundred thirty-four thousand, four hundred one".