24381561 has 8 divisors (see below), whose sum is σ = 32569344. Its totient is φ = 16224080.

The previous prime is 24381529. The next prime is 24381563. The reversal of 24381561 is 16518342.

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 24381561 - 2⁵ = 24381529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (24381563) 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 7 ways as a sum of consecutive naturals, for example, 5625 + ... + 8966.

It is an arithmetic number, because the mean of its divisors is an integer number (4071168).

Almost surely, 2^24381561 is an apocalyptic number.

It is an amenable number.

24381561 is a deficient number, since it is larger than the sum of its proper divisors (8187783).

24381561 is a wasteful number, since it uses less digits than its factorization.

24381561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151.

The product of its digits is 5760, while the sum is 30.

The square root of 24381561 is about 4937.7688281247. The cubic root of 24381561 is about 289.9705122613.

It can be divided in two parts, 24381 and 561, that added together give a palindrome (24942).

The spelling of 24381561 in words is "twenty-four million, three hundred eighty-one thousand, five hundred sixty-one".