52485521808397 has 2 divisors, whose sum is σ = 52485521808398. Its totient is φ = 52485521808396.

The previous prime is 52485521808323. The next prime is 52485521808427. The reversal of 52485521808397 is 79380812558425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42031545114276 + 10453976694121 = 6483174^2 + 3233261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52485521808397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52485521808497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26242760904198 + 26242760904199.

It is an arithmetic number, because the mean of its divisors is an integer number (26242760904199).

Almost surely, 2^{52485521808397} is an apocalyptic number.

It is an amenable number.

52485521808397 is a deficient number, since it is larger than the sum of its proper divisors (1).

52485521808397 is an equidigital number, since it uses as much as digits as its factorization.

52485521808397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536000, while the sum is 67.

The spelling of 52485521808397 in words is "fifty-two trillion, four hundred eighty-five billion, five hundred twenty-one million, eight hundred eight thousand, three hundred ninety-seven".