521032013461 has 2 divisors, whose sum is σ = 521032013462. Its totient is φ = 521032013460.

The previous prime is 521032013459. The next prime is 521032013563. The reversal of 521032013461 is 164310230125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401187959236 + 119844054225 = 633394^2 + 346185^2 .

It is a cyclic number.

It is not a de Polignac number, because 521032013461 - 2¹ = 521032013459 is a prime.

Together with 521032013459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521032013861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260516006730 + 260516006731.

It is an arithmetic number, because the mean of its divisors is an integer number (260516006731).

Almost surely, 2^521032013461 is an apocalyptic number.

It is an amenable number.

521032013461 is a deficient number, since it is larger than the sum of its proper divisors (1).

521032013461 is an equidigital number, since it uses as much as digits as its factorization.

521032013461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 521032013461 its reverse (164310230125), we get a palindrome (685342243586).

The spelling of 521032013461 in words is "five hundred twenty-one billion, thirty-two million, thirteen thousand, four hundred sixty-one".