513111053401 has 2 divisors, whose sum is σ = 513111053402. Its totient is φ = 513111053400.

The previous prime is 513111053387. The next prime is 513111053453. The reversal of 513111053401 is 104350111315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508319091225 + 4791962176 = 712965^2 + 69224^2 .

It is a cyclic number.

It is not a de Polignac number, because 513111053401 - 2⁵ = 513111053369 is a prime.

It is not a weakly prime, because it can be changed into another prime (513111053491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256555526700 + 256555526701.

It is an arithmetic number, because the mean of its divisors is an integer number (256555526701).

Almost surely, 2^513111053401 is an apocalyptic number.

It is an amenable number.

513111053401 is a deficient number, since it is larger than the sum of its proper divisors (1).

513111053401 is an equidigital number, since it uses as much as digits as its factorization.

513111053401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 513111053401 its reverse (104350111315), we get a palindrome (617461164716).

The spelling of 513111053401 in words is "five hundred thirteen billion, one hundred eleven million, fifty-three thousand, four hundred one".