43055654581 has 2 divisors, whose sum is σ = 43055654582. Its totient is φ = 43055654580.

The previous prime is 43055654507. The next prime is 43055654651. The reversal of 43055654581 is 18545655034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40133711556 + 2921943025 = 200334^2 + 54055^2 .

It is a cyclic number.

It is not a de Polignac number, because 43055654581 - 2⁹ = 43055654069 is a prime.

It is a super-2 number, since 2×43055654581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43055654381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21527827290 + 21527827291.

It is an arithmetic number, because the mean of its divisors is an integer number (21527827291).

Almost surely, 2^43055654581 is an apocalyptic number.

It is an amenable number.

43055654581 is a deficient number, since it is larger than the sum of its proper divisors (1).

43055654581 is an equidigital number, since it uses as much as digits as its factorization.

43055654581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 43055654581 in words is "forty-three billion, fifty-five million, six hundred fifty-four thousand, five hundred eighty-one".