55711313221357 has 2 divisors, whose sum is σ = 55711313221358. Its totient is φ = 55711313221356.

The previous prime is 55711313221309. The next prime is 55711313221379. The reversal of 55711313221357 is 75312231311755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53019790797961 + 2691522423396 = 7281469^2 + 1640586^2 .

It is a cyclic number.

It is not a de Polignac number, because 55711313221357 - 2³⁵ = 55676953482989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55711313221457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27855656610678 + 27855656610679.

It is an arithmetic number, because the mean of its divisors is an integer number (27855656610679).

Almost surely, 2^{55711313221357} is an apocalyptic number.

It is an amenable number.

55711313221357 is a deficient number, since it is larger than the sum of its proper divisors (1).

55711313221357 is an equidigital number, since it uses as much as digits as its factorization.

55711313221357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 661500, while the sum is 46.

The spelling of 55711313221357 in words is "fifty-five trillion, seven hundred eleven billion, three hundred thirteen million, two hundred twenty-one thousand, three hundred fifty-seven".