244220651 has 4 divisors (see below), whose sum is σ = 245102592. Its totient is φ = 243338712.

The previous prime is 244220597. The next prime is 244220659. The reversal of 244220651 is 156022442.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244220651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 244220651.

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, 440555 + ... + 441108.

It is an arithmetic number, because the mean of its divisors is an integer number (61275648).

Almost surely, 2^244220651 is an apocalyptic number.

244220651 is a deficient number, since it is larger than the sum of its proper divisors (881941).

244220651 is an equidigital number, since it uses as much as digits as its factorization.

244220651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881940.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 244220651 is about 15627.5606221828. The cubic root of 244220651 is about 625.0682813933.

The spelling of 244220651 in words is "two hundred forty-four million, two hundred twenty thousand, six hundred fifty-one".