650221441 has 4 divisors (see below), whose sum is σ = 672642900. Its totient is φ = 627799984.

The previous prime is 650221427. The next prime is 650221463. The reversal of 650221441 is 144122056.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 217415025 + 432806416 = 14745^2 + 20804^2 .

It is a cyclic number.

It is not a de Polignac number, because 650221441 - 2⁵ = 650221409 is a prime.

It is a super-2 number, since 2×650221441² = 845575844672232962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11210686 + ... + 11210743.

It is an arithmetic number, because the mean of its divisors is an integer number (168160725).

Almost surely, 2^650221441 is an apocalyptic number.

It is an amenable number.

650221441 is a deficient number, since it is larger than the sum of its proper divisors (22421459).

650221441 is a wasteful number, since it uses less digits than its factorization.

650221441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22421458.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 650221441 is about 25499.4400134591. The cubic root of 650221441 is about 866.3374638408.

Adding to 650221441 its reverse (144122056), we get a palindrome (794343497).

The spelling of 650221441 in words is "six hundred fifty million, two hundred twenty-one thousand, four hundred forty-one".