1521241 has 2 divisors, whose sum is σ = 1521242. Its totient is φ = 1521240.

The previous prime is 1521229. The next prime is 1521269. The reversal of 1521241 is 1421251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1058841 + 462400 = 1029^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521241 - 2⁵ = 1521209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1521281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760620 + 760621.

It is an arithmetic number, because the mean of its divisors is an integer number (760621).

2^1521241 is an apocalyptic number.

It is an amenable number.

1521241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521241 is an equidigital number, since it uses as much as digits as its factorization.

1521241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 16.

The square root of 1521241 is about 1233.3859898669. The cubic root of 1521241 is about 115.0092242128.

Adding to 1521241 its reverse (1421251), we get a palindrome (2942492).

The spelling of 1521241 in words is "one million, five hundred twenty-one thousand, two hundred forty-one".