4241521 has 2 divisors, whose sum is σ = 4241522. Its totient is φ = 4241520.

The previous prime is 4241509. The next prime is 4241539. The reversal of 4241521 is 1251424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4223025 + 18496 = 2055^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 4241521 - 2¹⁵ = 4208753 is a prime.

It is not a weakly prime, because it can be changed into another prime (4241581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120760 + 2120761.

It is an arithmetic number, because the mean of its divisors is an integer number (2120761).

Almost surely, 2^4241521 is an apocalyptic number.

It is an amenable number.

4241521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4241521 is an equidigital number, since it uses as much as digits as its factorization.

4241521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 19.

The square root of 4241521 is about 2059.4953265303. The cubic root of 4241521 is about 161.8727980798.

Adding to 4241521 its reverse (1251424), we get a palindrome (5492945).

It can be divided in two parts, 42415 and 21, that added together give a square (42436 = 206²).

The spelling of 4241521 in words is "four million, two hundred forty-one thousand, five hundred twenty-one".