4525521 has 48 divisors (see below), whose sum is σ = 8222592. Its totient is φ = 2154240.

The previous prime is 4525517. The next prime is 4525523. The reversal of 4525521 is 1255254.

It is a happy number.

It is not a de Polignac number, because 4525521 - 2² = 4525517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4525491 and 4525500.

It is not an unprimeable number, because it can be changed into a prime (4525523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32965 + ... + 33101.

It is an arithmetic number, because the mean of its divisors is an integer number (171304).

Almost surely, 2^4525521 is an apocalyptic number.

It is an amenable number.

4525521 is a deficient number, since it is larger than the sum of its proper divisors (3697071).

4525521 is a wasteful number, since it uses less digits than its factorization.

4525521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 171 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 4525521 is about 2127.3271962724. The cubic root of 4525521 is about 165.4078797798.

It can be divided in two parts, 4 and 525521, that added together give a palindrome (525525).

The spelling of 4525521 in words is "four million, five hundred twenty-five thousand, five hundred twenty-one".