405050505 has 8 divisors (see below), whose sum is σ = 648080832. Its totient is φ = 216026928.

The previous prime is 405050479. The next prime is 405050509. The reversal of 405050505 is 505050504.

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

It is not a de Polignac number, because 405050505 - 2⁵ = 405050473 is a prime.

405050505 is a modest number, since divided by 50505 gives 405 as remainder.

It is not an unprimeable number, because it can be changed into a prime (405050509) 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, 13501669 + ... + 13501698.

It is an arithmetic number, because the mean of its divisors is an integer number (81010104).

Almost surely, 2^405050505 is an apocalyptic number.

It is an amenable number.

405050505 is a deficient number, since it is larger than the sum of its proper divisors (243030327).

405050505 is a wasteful number, since it uses less digits than its factorization.

405050505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27003375.

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 405050505 is about 20125.8665651942. The cubic root of 405050505 is about 739.8943755988.

Subtracting 405050505 from its reverse (505050504), we obtain a palindrome (99999999).

The spelling of 405050505 in words is "four hundred five million, fifty thousand, five hundred five".