40411521 has 8 divisors (see below), whose sum is σ = 59868960. Its totient is φ = 26940996.

The previous prime is 40411517. The next prime is 40411531. The reversal of 40411521 is 12511404.

It is not a de Polignac number, because 40411521 - 2² = 40411517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40411494 and 40411503.

It is not an unprimeable number, because it can be changed into a prime (40411531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748335 + ... + 748388.

It is an arithmetic number, because the mean of its divisors is an integer number (7483620).

Almost surely, 2^40411521 is an apocalyptic number.

It is an amenable number.

40411521 is a deficient number, since it is larger than the sum of its proper divisors (19457439).

40411521 is a wasteful number, since it uses less digits than its factorization.

40411521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496732 (or 1496726 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 40411521 is about 6357.0056630461. The cubic root of 40411521 is about 343.1640085246.

Adding to 40411521 its reverse (12511404), we get a palindrome (52922925).

The spelling of 40411521 in words is "forty million, four hundred eleven thousand, five hundred twenty-one".