412004521 has 2 divisors, whose sum is σ = 412004522. Its totient is φ = 412004520.

The previous prime is 412004471. The next prime is 412004591. The reversal of 412004521 is 125400214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297942121 + 114062400 = 17261^2 + 10680^2 .

It is a cyclic number.

It is not a de Polignac number, because 412004521 - 2⁷ = 412004393 is a prime.

It is not a weakly prime, because it can be changed into another prime (412004591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206002260 + 206002261.

It is an arithmetic number, because the mean of its divisors is an integer number (206002261).

Almost surely, 2^412004521 is an apocalyptic number.

It is an amenable number.

412004521 is a deficient number, since it is larger than the sum of its proper divisors (1).

412004521 is an equidigital number, since it uses as much as digits as its factorization.

412004521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 412004521 is about 20297.8944967206. The cubic root of 412004521 is about 744.1046078151.

Adding to 412004521 its reverse (125400214), we get a palindrome (537404735).

The spelling of 412004521 in words is "four hundred twelve million, four thousand, five hundred twenty-one".