50222261 has 4 divisors (see below), whose sum is σ = 50260524. Its totient is φ = 50184000.

The previous prime is 50222239. The next prime is 50222279. The reversal of 50222261 is 16222205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16222205 = 5 ⋅3244441.

It can be written as a sum of positive squares in 2 ways, for example, as 3900625 + 46321636 = 1975^2 + 6806^2 .

It is a cyclic number.

It is not a de Polignac number, because 50222261 - 2⁶ = 50222197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50222281) 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, 17090 + ... + 19811.

It is an arithmetic number, because the mean of its divisors is an integer number (12565131).

Almost surely, 2^50222261 is an apocalyptic number.

It is an amenable number.

50222261 is a deficient number, since it is larger than the sum of its proper divisors (38263).

50222261 is a wasteful number, since it uses less digits than its factorization.

50222261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38262.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 50222261 is about 7086.7666110858. The cubic root of 50222261 is about 368.9482206901.

Adding to 50222261 its reverse (16222205), we get a palindrome (66444466).

The spelling of 50222261 in words is "fifty million, two hundred twenty-two thousand, two hundred sixty-one".