24181961 has 4 divisors (see below), whose sum is σ = 24522624. Its totient is φ = 23841300.

The previous prime is 24181957. The next prime is 24181991. The reversal of 24181961 is 16918142.

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.

It is a cyclic number.

It is not a de Polignac number, because 24181961 - 2² = 24181957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24181991) 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, 170225 + ... + 170366.

It is an arithmetic number, because the mean of its divisors is an integer number (6130656).

Almost surely, 2^24181961 is an apocalyptic number.

It is an amenable number.

24181961 is a deficient number, since it is larger than the sum of its proper divisors (340663).

24181961 is an equidigital number, since it uses as much as digits as its factorization.

24181961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340662.

The product of its digits is 3456, while the sum is 32.

The square root of 24181961 is about 4917.5157345961. The cubic root of 24181961 is about 289.1770605142.

The spelling of 24181961 in words is "twenty-four million, one hundred eighty-one thousand, nine hundred sixty-one".