1416521 has 6 divisors (see below), whose sum is σ = 1441866. Its totient is φ = 1391600.

The previous prime is 1416511. The next prime is 1416551. The reversal of 1416521 is 1256141.

It can be written as a sum of positive squares in only one way, i.e., 1290496 + 126025 = 1136^2 + 355^2 .

It is not a de Polignac number, because 1416521 - 2¹⁰ = 1415497 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1416493 and 1416502.

It is not an unprimeable number, because it can be changed into a prime (1416511) 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 5 ways as a sum of consecutive naturals, for example, 4901 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (240311).

2^1416521 is an apocalyptic number.

It is an amenable number.

1416521 is a deficient number, since it is larger than the sum of its proper divisors (25345).

1416521 is an frugal number, since it uses more digits than its factorization.

1416521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 352 counting only the distinct ones).

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

The square root of 1416521 is about 1190.1768776111. The cubic root of 1416521 is about 112.3072188080.

The spelling of 1416521 in words is "one million, four hundred sixteen thousand, five hundred twenty-one".