41521313 has 4 divisors (see below), whose sum is σ = 42304788. Its totient is φ = 40737840.

The previous prime is 41521303. The next prime is 41521321. The reversal of 41521313 is 31312514.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38031889 + 3489424 = 6167^2 + 1868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41521313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41521303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391658 + ... + 391763.

It is an arithmetic number, because the mean of its divisors is an integer number (10576197).

Almost surely, 2^41521313 is an apocalyptic number.

It is an amenable number.

41521313 is a deficient number, since it is larger than the sum of its proper divisors (783475).

41521313 is an equidigital number, since it uses as much as digits as its factorization.

41521313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783474.

The product of its digits is 360, while the sum is 20.

The square root of 41521313 is about 6443.7033606460. The cubic root of 41521313 is about 346.2770370786.

Adding to 41521313 its reverse (31312514), we get a palindrome (72833827).

The spelling of 41521313 in words is "forty-one million, five hundred twenty-one thousand, three hundred thirteen".