4526521 has 2 divisors, whose sum is σ = 4526522. Its totient is φ = 4526520.

The previous prime is 4526507. The next prime is 4526531. The reversal of 4526521 is 1256254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 1155625 = 1836^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 4526521 - 2⁷ = 4526393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4526531) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2263260 + 2263261.

It is an arithmetic number, because the mean of its divisors is an integer number (2263261).

Almost surely, 2^4526521 is an apocalyptic number.

It is an amenable number.

4526521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4526521 is an equidigital number, since it uses as much as digits as its factorization.

4526521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 4526521 is about 2127.5622200067. The cubic root of 4526521 is about 165.4200622223.

It can be divided in two parts, 452 and 6521, that multiplied together give a palindrome (2947492).

The spelling of 4526521 in words is "four million, five hundred twenty-six thousand, five hundred twenty-one".