50011001 has 4 divisors (see below), whose sum is σ = 50028132. Its totient is φ = 49993872.

The previous prime is 50010979. The next prime is 50011019. The reversal of 50011001 is 10011005.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11868025 + 38142976 = 3445^2 + 6176^2 .

It is a cyclic number.

It is not a de Polignac number, because 50011001 - 2²² = 45816697 is a prime.

It is a super-2 number, since 2×50011001² = 5002200442044002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50011001.

It is not an unprimeable number, because it can be changed into a prime (50011601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2966 + ... + 10431.

It is an arithmetic number, because the mean of its divisors is an integer number (12507033).

Almost surely, 2^50011001 is an apocalyptic number.

It is an amenable number.

50011001 is a deficient number, since it is larger than the sum of its proper divisors (17131).

50011001 is a wasteful number, since it uses less digits than its factorization.

50011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17130.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 50011001 is about 7071.8456572524. The cubic root of 50011001 is about 368.4301665697.

Adding to 50011001 its reverse (10011005), we get a palindrome (60022006).

The spelling of 50011001 in words is "fifty million, eleven thousand, one".