50505001 has 4 divisors (see below), whose sum is σ = 50520004. Its totient is φ = 50490000.

The previous prime is 50504999. The next prime is 50505017. The reversal of 50505001 is 10050505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20693401 + 29811600 = 4549^2 + 5460^2 .

It is a cyclic number.

It is not a de Polignac number, because 50505001 - 2¹ = 50504999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50505701) 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, 151 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (12630001).

Almost surely, 2^50505001 is an apocalyptic number.

It is an amenable number.

50505001 is a deficient number, since it is larger than the sum of its proper divisors (15003).

50505001 is an equidigital number, since it uses as much as digits as its factorization.

50505001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15002.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 50505001 is about 7106.6870621971. The cubic root of 50505001 is about 369.6392905366.

Adding to 50505001 its reverse (10050505), we get a palindrome (60555506).

The spelling of 50505001 in words is "fifty million, five hundred five thousand, one".