55212732313 has 2 divisors, whose sum is σ = 55212732314. Its totient is φ = 55212732312.

The previous prime is 55212732241. The next prime is 55212732319. The reversal of 55212732313 is 31323721255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27886328064 + 27326404249 = 166992^2 + 165307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55212732313 is a prime.

It is not a weakly prime, because it can be changed into another prime (55212732319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27606366156 + 27606366157.

It is an arithmetic number, because the mean of its divisors is an integer number (27606366157).

Almost surely, 2^55212732313 is an apocalyptic number.

It is an amenable number.

55212732313 is a deficient number, since it is larger than the sum of its proper divisors (1).

55212732313 is an equidigital number, since it uses as much as digits as its factorization.

55212732313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 34.

The spelling of 55212732313 in words is "fifty-five billion, two hundred twelve million, seven hundred thirty-two thousand, three hundred thirteen".