55213042513 has 2 divisors, whose sum is σ = 55213042514. Its totient is φ = 55213042512.

The previous prime is 55213042499. The next prime is 55213042523. The reversal of 55213042513 is 31524031255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41964341904 + 13248700609 = 204852^2 + 115103^2 .

It is a cyclic number.

It is not a de Polignac number, because 55213042513 - 2¹³ = 55213034321 is a prime.

It is not a weakly prime, because it can be changed into another prime (55213042523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27606521256 + 27606521257.

It is an arithmetic number, because the mean of its divisors is an integer number (27606521257).

Almost surely, 2^55213042513 is an apocalyptic number.

It is an amenable number.

55213042513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55213042513 is an equidigital number, since it uses as much as digits as its factorization.

55213042513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 55213042513 its reverse (31524031255), we get a palindrome (86737073768).

The spelling of 55213042513 in words is "fifty-five billion, two hundred thirteen million, forty-two thousand, five hundred thirteen".