5206561403 has 2 divisors, whose sum is σ = 5206561404. Its totient is φ = 5206561402.

The previous prime is 5206561397. The next prime is 5206561453. The reversal of 5206561403 is 3041656025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5206561403 - 2⁴ = 5206561387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5206561403.

It is not a weakly prime, because it can be changed into another prime (5206561453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2603280701 + 2603280702.

It is an arithmetic number, because the mean of its divisors is an integer number (2603280702).

Almost surely, 2^5206561403 is an apocalyptic number.

5206561403 is a deficient number, since it is larger than the sum of its proper divisors (1).

5206561403 is an equidigital number, since it uses as much as digits as its factorization.

5206561403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 5206561403 is about 72156.5063109350. The cubic root of 5206561403 is about 1733.2065895203.

The spelling of 5206561403 in words is "five billion, two hundred six million, five hundred sixty-one thousand, four hundred three".