4816521 has 6 divisors (see below), whose sum is σ = 6957210. Its totient is φ = 3211008.

The previous prime is 4816517. The next prime is 4816531. The reversal of 4816521 is 1256184.

4816521 is a `hidden beast` number, since 4 + 8 + 1 + 652 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 2143296 = 1635^2 + 1464^2 .

It is not a de Polignac number, because 4816521 - 2² = 4816517 is a prime.

4816521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4816531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 267576 + ... + 267593.

It is an arithmetic number, because the mean of its divisors is an integer number (1159535).

Almost surely, 2^4816521 is an apocalyptic number.

It is an amenable number.

4816521 is a deficient number, since it is larger than the sum of its proper divisors (2140689).

4816521 is a wasteful number, since it uses less digits than its factorization.

4816521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535175 (or 535172 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 4816521 is about 2194.6573764485. The cubic root of 4816521 is about 168.8798440992.

The spelling of 4816521 in words is "four million, eight hundred sixteen thousand, five hundred twenty-one".