416521 has 8 divisors (see below), whose sum is σ = 480320. Its totient is φ = 353808.

The previous prime is 416513. The next prime is 416531. The reversal of 416521 is 125614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 416521 - 2³ = 416513 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416501) 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, 910 + ... + 1288.

It is an arithmetic number, because the mean of its divisors is an integer number (60040).

2⁴¹⁶⁵²¹ is an apocalyptic number.

It is an amenable number.

416521 is a deficient number, since it is larger than the sum of its proper divisors (63799).

416521 is a wasteful number, since it uses less digits than its factorization.

416521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its digits is 240, while the sum is 19.

The square root of 416521 is about 645.3843815898. The cubic root of 416521 is about 74.6813742109.

It can be divided in two parts, 4165 and 21, that added together give a triangular number (4186 = T₉₁).

The spelling of 416521 in words is "four hundred sixteen thousand, five hundred twenty-one".