5245546861 has 2 divisors, whose sum is σ = 5245546862. Its totient is φ = 5245546860.

The previous prime is 5245546841. The next prime is 5245546949. The reversal of 5245546861 is 1686455425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3341533636 + 1904013225 = 57806^2 + 43635^2 .

It is a cyclic number.

It is not a de Polignac number, because 5245546861 - 2⁵ = 5245546829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5245546841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2622773430 + 2622773431.

It is an arithmetic number, because the mean of its divisors is an integer number (2622773431).

Almost surely, 2^5245546861 is an apocalyptic number.

It is an amenable number.

5245546861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5245546861 is an equidigital number, since it uses as much as digits as its factorization.

5245546861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152000, while the sum is 46.

The square root of 5245546861 is about 72426.1476332961. The cubic root of 5245546861 is about 1737.5217793174.

The spelling of 5245546861 in words is "five billion, two hundred forty-five million, five hundred forty-six thousand, eight hundred sixty-one".