43054681 has 2 divisors, whose sum is σ = 43054682. Its totient is φ = 43054680.

The previous prime is 43054667. The next prime is 43054723. The reversal of 43054681 is 18645034.

It is a happy number.

43054681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 921600 = 6491^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 43054681 - 2⁹ = 43054169 is a prime.

It is a super-2 number, since 2×43054681² = 3707411112023522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43054181) 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, 21527340 + 21527341.

It is an arithmetic number, because the mean of its divisors is an integer number (21527341).

Almost surely, 2^43054681 is an apocalyptic number.

It is an amenable number.

43054681 is a deficient number, since it is larger than the sum of its proper divisors (1).

43054681 is an equidigital number, since it uses as much as digits as its factorization.

43054681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 43054681 is about 6561.6065868048. The cubic root of 43054681 is about 350.4882464755.

The spelling of 43054681 in words is "forty-three million, fifty-four thousand, six hundred eighty-one".