43454641 has 2 divisors, whose sum is σ = 43454642. Its totient is φ = 43454640.

The previous prime is 43454633. The next prime is 43454657. The reversal of 43454641 is 14645434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43362225 + 92416 = 6585^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 43454641 - 2³ = 43454633 is a prime.

It is not a weakly prime, because it can be changed into another prime (43454681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21727320 + 21727321.

It is an arithmetic number, because the mean of its divisors is an integer number (21727321).

Almost surely, 2^43454641 is an apocalyptic number.

It is an amenable number.

43454641 is a deficient number, since it is larger than the sum of its proper divisors (1).

43454641 is an equidigital number, since it uses as much as digits as its factorization.

43454641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The square root of 43454641 is about 6592.0134253504. The cubic root of 43454641 is about 351.5701995259.

The spelling of 43454641 in words is "forty-three million, four hundred fifty-four thousand, six hundred forty-one".