41521005 has 40 divisors (see below), whose sum is σ = 75019032. Its totient is φ = 21969792.

The previous prime is 41520989. The next prime is 41521009. The reversal of 41521005 is 50012514.

It can be written as a sum of positive squares in 4 ways, for example, as 227529 + 41293476 = 477^2 + 6426^2 .

It is not a de Polignac number, because 41521005 - 2⁴ = 41520989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41521009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63259 + ... + 63911.

Almost surely, 2^41521005 is an apocalyptic number.

41521005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41521005 is a deficient number, since it is larger than the sum of its proper divisors (33498027).

41521005 is a wasteful number, since it uses less digits than its factorization.

41521005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 41521005 is about 6443.6794613016. The cubic root of 41521005 is about 346.2761808630.

Adding to 41521005 its reverse (50012514), we get a palindrome (91533519).

The spelling of 41521005 in words is "forty-one million, five hundred twenty-one thousand, five".