244220653 has 4 divisors (see below), whose sum is σ = 244441980. Its totient is φ = 243999328.

The previous prime is 244220597. The next prime is 244220659. The reversal of 244220653 is 356022442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356022442 = 2 ⋅178011221.

It can be written as a sum of positive squares in 2 ways, for example, as 129345129 + 114875524 = 11373^2 + 10718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244220653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244220659) 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, 109000 + ... + 111217.

It is an arithmetic number, because the mean of its divisors is an integer number (61110495).

Almost surely, 2^244220653 is an apocalyptic number.

It is an amenable number.

244220653 is a deficient number, since it is larger than the sum of its proper divisors (221327).

244220653 is a wasteful number, since it uses less digits than its factorization.

244220653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221326.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 244220653 is about 15627.5606861724. The cubic root of 244220653 is about 625.0682830996.

The spelling of 244220653 in words is "two hundred forty-four million, two hundred twenty thousand, six hundred fifty-three".