41564321 has 4 divisors (see below), whose sum is σ = 42184752. Its totient is φ = 40943892.

The previous prime is 41564291. The next prime is 41564329. The reversal of 41564321 is 12346514.

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 an emirpimes, since its reverse is a distinct semiprime: 12346514 = 2 ⋅6173257.

It is a cyclic number.

It is not a de Polignac number, because 41564321 - 2¹⁰ = 41563297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41564329) 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, 310115 + ... + 310248.

It is an arithmetic number, because the mean of its divisors is an integer number (10546188).

Almost surely, 2^41564321 is an apocalyptic number.

It is an amenable number.

41564321 is a deficient number, since it is larger than the sum of its proper divisors (620431).

41564321 is an equidigital number, since it uses as much as digits as its factorization.

41564321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620430.

The product of its digits is 2880, while the sum is 26.

The square root of 41564321 is about 6447.0397082692. The cubic root of 41564321 is about 346.3965543636.

The spelling of 41564321 in words is "forty-one million, five hundred sixty-four thousand, three hundred twenty-one".