41618221 has 4 divisors (see below), whose sum is σ = 41730172. Its totient is φ = 41506272.

The previous prime is 41618183. The next prime is 41618243. The reversal of 41618221 is 12281614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12281614 = 2 ⋅6140807.

It can be written as a sum of positive squares in 2 ways, for example, as 16728100 + 24890121 = 4090^2 + 4989^2 .

It is a cyclic number.

It is not a de Polignac number, because 41618221 - 2²⁵ = 8063789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41618251) 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, 55416 + ... + 56161.

It is an arithmetic number, because the mean of its divisors is an integer number (10432543).

Almost surely, 2^41618221 is an apocalyptic number.

It is an amenable number.

41618221 is a deficient number, since it is larger than the sum of its proper divisors (111951).

41618221 is a wasteful number, since it uses less digits than its factorization.

41618221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111950.

The product of its digits is 768, while the sum is 25.

The square root of 41618221 is about 6451.2185670616. The cubic root of 41618221 is about 346.5462236711.

Adding to 41618221 its reverse (12281614), we get a palindrome (53899835).

The spelling of 41618221 in words is "forty-one million, six hundred eighteen thousand, two hundred twenty-one".