244881561 has 8 divisors (see below), whose sum is σ = 334472544. Its totient is φ = 159272480.

The previous prime is 244881547. The next prime is 244881563. The reversal of 244881561 is 165188442.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 244881561 - 2¹⁷ = 244750489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (244881563) 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 7 ways as a sum of consecutive naturals, for example, 995331 + ... + 995576.

It is an arithmetic number, because the mean of its divisors is an integer number (41809068).

Almost surely, 2^244881561 is an apocalyptic number.

It is an amenable number.

244881561 is a deficient number, since it is larger than the sum of its proper divisors (89590983).

244881561 is a wasteful number, since it uses less digits than its factorization.

244881561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990951.

The product of its digits is 61440, while the sum is 39.

The square root of 244881561 is about 15648.6919900674. The cubic root of 244881561 is about 625.6316268477.

The spelling of 244881561 in words is "two hundred forty-four million, eight hundred eighty-one thousand, five hundred sixty-one".