4426521 has 16 divisors (see below), whose sum is σ = 6647808. Its totient is φ = 2595600.

The previous prime is 4426517. The next prime is 4426529. The reversal of 4426521 is 1256244.

It is not a de Polignac number, because 4426521 - 2² = 4426517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4426491 and 4426500.

It is not an unprimeable number, because it can be changed into a prime (4426529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141 + ... + 3186.

It is an arithmetic number, because the mean of its divisors is an integer number (415488).

Almost surely, 2^4426521 is an apocalyptic number.

It is an amenable number.

4426521 is a deficient number, since it is larger than the sum of its proper divisors (2221287).

4426521 is a wasteful number, since it uses less digits than its factorization.

4426521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372.

The product of its digits is 1920, while the sum is 24.

The square root of 4426521 is about 2103.9298942693. The cubic root of 4426521 is about 164.1928254444.

It can be divided in two parts, 44 and 26521, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 4426521 in words is "four million, four hundred twenty-six thousand, five hundred twenty-one".