90241643 has 2 divisors, whose sum is σ = 90241644. Its totient is φ = 90241642.

The previous prime is 90241637. The next prime is 90241691. The reversal of 90241643 is 34614209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90241643 - 2¹⁴ = 90225259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (90241603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45120821 + 45120822.

It is an arithmetic number, because the mean of its divisors is an integer number (45120822).

Almost surely, 2^90241643 is an apocalyptic number.

90241643 is a deficient number, since it is larger than the sum of its proper divisors (1).

90241643 is an equidigital number, since it uses as much as digits as its factorization.

90241643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 90241643 is about 9499.5601477121. The cubic root of 90241643 is about 448.5411903456.

The spelling of 90241643 in words is "ninety million, two hundred forty-one thousand, six hundred forty-three".