4845521 has 4 divisors (see below), whose sum is σ = 4911972. Its totient is φ = 4779072.

The previous prime is 4845499. The next prime is 4845539. The reversal of 4845521 is 1255484.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3845521 + 1000000 = 1961^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 4845521 - 2¹⁴ = 4829137 is a prime.

It is a super-2 number, since 2×4845521² = 46958147522882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4845721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33116 + ... + 33261.

It is an arithmetic number, because the mean of its divisors is an integer number (1227993).

Almost surely, 2^4845521 is an apocalyptic number.

It is an amenable number.

4845521 is a deficient number, since it is larger than the sum of its proper divisors (66451).

4845521 is an equidigital number, since it uses as much as digits as its factorization.

4845521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66450.

The product of its digits is 6400, while the sum is 29.

The square root of 4845521 is about 2201.2544151006. The cubic root of 4845521 is about 169.2181047791.

The spelling of 4845521 in words is "four million, eight hundred forty-five thousand, five hundred twenty-one".