52780030555397 has 2 divisors, whose sum is σ = 52780030555398. Its totient is φ = 52780030555396.

The previous prime is 52780030555363. The next prime is 52780030555423. The reversal of 52780030555397 is 79355503008725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52499385957316 + 280644598081 = 7245646^2 + 529759^2 .

It is a cyclic number.

It is not a de Polignac number, because 52780030555397 - 2²⁰ = 52780029506821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52780030555697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26390015277698 + 26390015277699.

It is an arithmetic number, because the mean of its divisors is an integer number (26390015277699).

Almost surely, 2^{52780030555397} is an apocalyptic number.

It is an amenable number.

52780030555397 is a deficient number, since it is larger than the sum of its proper divisors (1).

52780030555397 is an equidigital number, since it uses as much as digits as its factorization.

52780030555397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690000, while the sum is 59.

The spelling of 52780030555397 in words is "fifty-two trillion, seven hundred eighty billion, thirty million, five hundred fifty-five thousand, three hundred ninety-seven".