50721211 has 6 divisors (see below), whose sum is σ = 51494100. Its totient is φ = 49959756.

The previous prime is 50721197. The next prime is 50721221. The reversal of 50721211 is 11212705.

It is not a de Polignac number, because 50721211 - 2⁹ = 50720699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50721221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1161 + ... + 10138.

It is an arithmetic number, because the mean of its divisors is an integer number (8582350).

Almost surely, 2^50721211 is an apocalyptic number.

50721211 is a deficient number, since it is larger than the sum of its proper divisors (772889).

50721211 is an equidigital number, since it uses as much as digits as its factorization.

50721211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433 (or 11366 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 50721211 is about 7121.8825460688. The cubic root of 50721211 is about 370.1660102374.

Adding to 50721211 its reverse (11212705), we get a palindrome (61933916).

The spelling of 50721211 in words is "fifty million, seven hundred twenty-one thousand, two hundred eleven".