50402221 has 4 divisors (see below), whose sum is σ = 50494912. Its totient is φ = 50309532.

The previous prime is 50402207. The next prime is 50402227. The reversal of 50402221 is 12220405.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12220405 = 5 ⋅2444081.

It is a cyclic number.

It is not a de Polignac number, because 50402221 - 2²¹ = 48305069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50402195 and 50402204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50402227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45525 + ... + 46618.

It is an arithmetic number, because the mean of its divisors is an integer number (12623728).

Almost surely, 2^50402221 is an apocalyptic number.

It is an amenable number.

50402221 is a deficient number, since it is larger than the sum of its proper divisors (92691).

50402221 is an equidigital number, since it uses as much as digits as its factorization.

50402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92690.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 50402221 is about 7099.4521619629. The cubic root of 50402221 is about 369.3883759327.

Adding to 50402221 its reverse (12220405), we get a palindrome (62622626).

The spelling of 50402221 in words is "fifty million, four hundred two thousand, two hundred twenty-one".