521345141 has 2 divisors, whose sum is σ = 521345142. Its totient is φ = 521345140.

The previous prime is 521345131. The next prime is 521345159. The reversal of 521345141 is 141543125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442934116 + 78411025 = 21046^2 + 8855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521345141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 521345141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521345131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260672570 + 260672571.

It is an arithmetic number, because the mean of its divisors is an integer number (260672571).

Almost surely, 2^521345141 is an apocalyptic number.

It is an amenable number.

521345141 is a deficient number, since it is larger than the sum of its proper divisors (1).

521345141 is an equidigital number, since it uses as much as digits as its factorization.

521345141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 521345141 is about 22832.9836201930. The cubic root of 521345141 is about 804.8379448230.

Adding to 521345141 its reverse (141543125), we get a palindrome (662888266).

It can be divided in two parts, 52134 and 5141, that added together give a palindrome (57275).

The spelling of 521345141 in words is "five hundred twenty-one million, three hundred forty-five thousand, one hundred forty-one".