50911213 has 4 divisors (see below), whose sum is σ = 53124768. Its totient is φ = 48697660.

The previous prime is 50911193. The next prime is 50911219. The reversal of 50911213 is 31211905.

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 50911213 - 2⁹ = 50910701 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50911219) 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, 1106743 + ... + 1106788.

It is an arithmetic number, because the mean of its divisors is an integer number (13281192).

Almost surely, 2^50911213 is an apocalyptic number.

It is an amenable number.

50911213 is a deficient number, since it is larger than the sum of its proper divisors (2213555).

50911213 is a wasteful number, since it uses less digits than its factorization.

50911213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213554.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 50911213 is about 7135.2093872570. The cubic root of 50911213 is about 370.6276490762.

The spelling of 50911213 in words is "fifty million, nine hundred eleven thousand, two hundred thirteen".