50821911 has 20 divisors (see below), whose sum is σ = 86765712. Its totient is φ = 29040768.

The previous prime is 50821909. The next prime is 50821913. The reversal of 50821911 is 11912805.

It is an interprime number because it is at equal distance from previous prime (50821909) and next prime (50821913).

It is not a de Polignac number, because 50821911 - 2¹ = 50821909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50821913) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44250 + ... + 45383.

Almost surely, 2^50821911 is an apocalyptic number.

50821911 is a deficient number, since it is larger than the sum of its proper divisors (35943801).

50821911 is an equidigital number, since it uses as much as digits as its factorization.

50821911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89652 (or 89643 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 50821911 is about 7128.9488004895. The cubic root of 50821911 is about 370.4108195592.

The spelling of 50821911 in words is "fifty million, eight hundred twenty-one thousand, nine hundred eleven".