1413521 has 2 divisors, whose sum is σ = 1413522. Its totient is φ = 1413520.

The previous prime is 1413509. The next prime is 1413523. The reversal of 1413521 is 1253141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 923521 + 490000 = 961^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1413521 - 2¹⁰ = 1412497 is a prime.

It is a Sophie Germain prime.

Together with 1413523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1413521.

It is not a weakly prime, because it can be changed into another prime (1413523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 706760 + 706761.

It is an arithmetic number, because the mean of its divisors is an integer number (706761).

2^1413521 is an apocalyptic number.

It is an amenable number.

1413521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1413521 is an equidigital number, since it uses as much as digits as its factorization.

1413521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 17.

The square root of 1413521 is about 1188.9158927359. The cubic root of 1413521 is about 112.2278789351.

Adding to 1413521 its reverse (1253141), we get a palindrome (2666662).

It can be divided in two parts, 14135 and 21, that multiplied together give a triangular number (296835 = T₇₇₀).

The spelling of 1413521 in words is "one million, four hundred thirteen thousand, five hundred twenty-one".