413211521 has 4 divisors (see below), whose sum is σ = 413255472. Its totient is φ = 413167572.

The previous prime is 413211509. The next prime is 413211527. The reversal of 413211521 is 125112314.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 125112314 = 2 ⋅62556157.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-413211521 is a prime.

It is a super-2 number, since 2×413211521² = 341487522174266882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 413211493 and 413211502.

It is not an unprimeable number, because it can be changed into a prime (413211527) 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, 1535 + ... + 28788.

It is an arithmetic number, because the mean of its divisors is an integer number (103313868).

Almost surely, 2^413211521 is an apocalyptic number.

It is an amenable number.

413211521 is a deficient number, since it is larger than the sum of its proper divisors (43951).

413211521 is a wasteful number, since it uses less digits than its factorization.

413211521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43950.

The product of its digits is 240, while the sum is 20.

The square root of 413211521 is about 20327.6049007255. The cubic root of 413211521 is about 744.8305372557.

Adding to 413211521 its reverse (125112314), we get a palindrome (538323835).

The spelling of 413211521 in words is "four hundred thirteen million, two hundred eleven thousand, five hundred twenty-one".