55120033235513 has 2 divisors, whose sum is σ = 55120033235514. Its totient is φ = 55120033235512.

The previous prime is 55120033235453. The next prime is 55120033235521. The reversal of 55120033235513 is 31553233002155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54759807600169 + 360225635344 = 7399987^2 + 600188^2 .

It is a cyclic number.

It is not a de Polignac number, because 55120033235513 - 2²⁸ = 55119764800057 is a prime.

It is not a weakly prime, because it can be changed into another prime (55120033235413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560016617756 + 27560016617757.

It is an arithmetic number, because the mean of its divisors is an integer number (27560016617757).

Almost surely, 2^{55120033235513} is an apocalyptic number.

It is an amenable number.

55120033235513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55120033235513 is an equidigital number, since it uses as much as digits as its factorization.

55120033235513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 202500, while the sum is 38.

Adding to 55120033235513 its reverse (31553233002155), we get a palindrome (86673266237668).

The spelling of 55120033235513 in words is "fifty-five trillion, one hundred twenty billion, thirty-three million, two hundred thirty-five thousand, five hundred thirteen".