2455543861 has 2 divisors, whose sum is σ = 2455543862. Its totient is φ = 2455543860.

The previous prime is 2455543847. The next prime is 2455543873. The reversal of 2455543861 is 1683455542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2449755025 + 5788836 = 49495^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 2455543861 - 2¹¹ = 2455541813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2455543841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227771930 + 1227771931.

It is an arithmetic number, because the mean of its divisors is an integer number (1227771931).

Almost surely, 2^2455543861 is an apocalyptic number.

It is an amenable number.

2455543861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455543861 is an equidigital number, since it uses as much as digits as its factorization.

2455543861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576000, while the sum is 43.

The square root of 2455543861 is about 49553.4444917808. Note that the first 4 decimals coincide. The cubic root of 2455543861 is about 1349.1158107800.

The spelling of 2455543861 in words is "two billion, four hundred fifty-five million, five hundred forty-three thousand, eight hundred sixty-one".