521414441 has 2 divisors, whose sum is σ = 521414442. Its totient is φ = 521414440.

The previous prime is 521414423. The next prime is 521414459. The reversal of 521414441 is 144414125.

It is a balanced prime because it is at equal distance from previous prime (521414423) and next prime (521414459).

It can be written as a sum of positive squares in only one way, i.e., 485761600 + 35652841 = 22040^2 + 5971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521414441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 521414441.

It is not a weakly prime, because it can be changed into another prime (521414041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260707220 + 260707221.

It is an arithmetic number, because the mean of its divisors is an integer number (260707221).

Almost surely, 2^521414441 is an apocalyptic number.

It is an amenable number.

521414441 is a deficient number, since it is larger than the sum of its proper divisors (1).

521414441 is an equidigital number, since it uses as much as digits as its factorization.

521414441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 26.

The square root of 521414441 is about 22834.5011112571. The cubic root of 521414441 is about 804.8736043724.

Adding to 521414441 its reverse (144414125), we get a palindrome (665828566).

The spelling of 521414441 in words is "five hundred twenty-one million, four hundred fourteen thousand, four hundred forty-one".