40561841 has 4 divisors (see below), whose sum is σ = 40656384. Its totient is φ = 40467300.

The previous prime is 40561837. The next prime is 40561853. The reversal of 40561841 is 14816504.

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 40561841 - 2² = 40561837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40561831) 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, 46625 + ... + 47486.

It is an arithmetic number, because the mean of its divisors is an integer number (10164096).

Almost surely, 2^40561841 is an apocalyptic number.

It is an amenable number.

40561841 is a deficient number, since it is larger than the sum of its proper divisors (94543).

40561841 is an equidigital number, since it uses as much as digits as its factorization.

40561841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94542.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 40561841 is about 6368.8178651929. The cubic root of 40561841 is about 343.5889746752.

The spelling of 40561841 in words is "forty million, five hundred sixty-one thousand, eight hundred forty-one".