50221881 has 24 divisors (see below), whose sum is σ = 75508680. Its totient is φ = 32126976.

The previous prime is 50221877. The next prime is 50221901. The reversal of 50221881 is 18812205.

It can be written as a sum of positive squares in 4 ways, for example, as 10342656 + 39879225 = 3216^2 + 6315^2 .

It is not a de Polignac number, because 50221881 - 2² = 50221877 is a prime.

It is a super-2 number, since 2×50221881² = 5044474662356322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50221861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49875 + ... + 50871.

It is an arithmetic number, because the mean of its divisors is an integer number (3146195).

Almost surely, 2^50221881 is an apocalyptic number.

It is an amenable number.

50221881 is a deficient number, since it is larger than the sum of its proper divisors (25286799).

50221881 is a wasteful number, since it uses less digits than its factorization.

50221881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 50221881 is about 7086.7398005007. The cubic root of 50221881 is about 368.9472901554.

It can be divided in two parts, 5022 and 1881, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 50221881 in words is "fifty million, two hundred twenty-one thousand, eight hundred eighty-one".