41020521 has 4 divisors (see below), whose sum is σ = 54694032. Its totient is φ = 27347012.

The previous prime is 41020493. The next prime is 41020537. The reversal of 41020521 is 12502014.

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 41020521 - 2⁹ = 41020009 is a prime.

It is a super-2 number, since 2×41020521² = 3365366286222882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 41020521.

It is not an unprimeable number, because it can be changed into a prime (41020571) 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, 6836751 + ... + 6836756.

It is an arithmetic number, because the mean of its divisors is an integer number (13673508).

Almost surely, 2^41020521 is an apocalyptic number.

It is an amenable number.

41020521 is a deficient number, since it is larger than the sum of its proper divisors (13673511).

41020521 is a wasteful number, since it uses less digits than its factorization.

41020521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13673510.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 41020521 is about 6404.7264578591. The cubic root of 41020521 is about 344.8792436023.

Adding to 41020521 its reverse (12502014), we get a palindrome (53522535).

The spelling of 41020521 in words is "forty-one million, twenty thousand, five hundred twenty-one".