41521641 has 16 divisors (see below), whose sum is σ = 63483264. Its totient is φ = 23647104.

The previous prime is 41521621. The next prime is 41521657. The reversal of 41521641 is 14612514.

It is a happy number.

It is not a de Polignac number, because 41521641 - 2¹⁸ = 41259497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41521621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3415 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (3967704).

Almost surely, 2^41521641 is an apocalyptic number.

It is an amenable number.

41521641 is a deficient number, since it is larger than the sum of its proper divisors (21961623).

41521641 is a wasteful number, since it uses less digits than its factorization.

41521641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640.

The product of its digits is 960, while the sum is 24.

The square root of 41521641 is about 6443.7288117983. The cubic root of 41521641 is about 346.2779488880.

The spelling of 41521641 in words is "forty-one million, five hundred twenty-one thousand, six hundred forty-one".