501069009 has 16 divisors (see below), whose sum is σ = 768223232. Its totient is φ = 284566608.

The previous prime is 501068993. The next prime is 501069013. The reversal of 501069009 is 900960105.

It is not a de Polignac number, because 501069009 - 2⁴ = 501068993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (501069409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69769 + ... + 76614.

It is an arithmetic number, because the mean of its divisors is an integer number (48013952).

Almost surely, 2^501069009 is an apocalyptic number.

It is an amenable number.

501069009 is a deficient number, since it is larger than the sum of its proper divisors (267154223).

501069009 is a wasteful number, since it uses less digits than its factorization.

501069009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146556.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 501069009 is about 22384.5707798921. The cubic root of 501069009 is about 794.2657720103.

The spelling of 501069009 in words is "five hundred one million, sixty-nine thousand, nine".