505050009 has 8 divisors (see below), whose sum is σ = 674646912. Its totient is φ = 336076560.

The previous prime is 505049983. The next prime is 505050043. The reversal of 505050009 is 900050505.

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

It is not a de Polignac number, because 505050009 - 2⁵ = 505049977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505050079) 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, 153969 + ... + 157214.

It is an arithmetic number, because the mean of its divisors is an integer number (84330864).

Almost surely, 2^505050009 is an apocalyptic number.

It is an amenable number.

505050009 is a deficient number, since it is larger than the sum of its proper divisors (169596903).

505050009 is a wasteful number, since it uses less digits than its factorization.

505050009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311727.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 505050009 is about 22473.3177123450. The cubic root of 505050009 is about 796.3637098052.

The spelling of 505050009 in words is "five hundred five million, fifty thousand, nine".