24941561 has 4 divisors (see below), whose sum is σ = 24951552. Its totient is φ = 24931572.

The previous prime is 24941551. The next prime is 24941573. The reversal of 24941561 is 16514942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16514942 = 2 ⋅8257471.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24941561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24941531) 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, 2360 + ... + 7446.

It is an arithmetic number, because the mean of its divisors is an integer number (6237888).

Almost surely, 2^24941561 is an apocalyptic number.

It is an amenable number.

24941561 is a deficient number, since it is larger than the sum of its proper divisors (9991).

24941561 is an equidigital number, since it uses as much as digits as its factorization.

24941561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990.

The product of its digits is 8640, while the sum is 32.

The square root of 24941561 is about 4994.1526808859. The cubic root of 24941561 is about 292.1737605005.

The spelling of 24941561 in words is "twenty-four million, nine hundred forty-one thousand, five hundred sixty-one".