50640001 has 4 divisors (see below), whose sum is σ = 50675632. Its totient is φ = 50604372.

The previous prime is 50639971. The next prime is 50640011. The reversal of 50640001 is 10004605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50640001 - 2¹⁹ = 50115713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50640011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15591 + ... + 18556.

It is an arithmetic number, because the mean of its divisors is an integer number (12668908).

Almost surely, 2^50640001 is an apocalyptic number.

It is an amenable number.

50640001 is a deficient number, since it is larger than the sum of its proper divisors (35631).

50640001 is a wasteful number, since it uses less digits than its factorization.

50640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35630.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 50640001 is about 7116.1788201253. The cubic root of 50640001 is about 369.9683464521.

Adding to 50640001 its reverse (10004605), we get a palindrome (60644606).

The spelling of 50640001 in words is "fifty million, six hundred forty thousand, one".