90241549 has 2 divisors, whose sum is σ = 90241550. Its totient is φ = 90241548.

The previous prime is 90241531. The next prime is 90241561. The reversal of 90241549 is 94514209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 26081449 = 8010^2 + 5107^2 .

It is a cyclic number.

It is not a de Polignac number, because 90241549 - 2⁷ = 90241421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90241519) 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, 45120774 + 45120775.

It is an arithmetic number, because the mean of its divisors is an integer number (45120775).

Almost surely, 2^90241549 is an apocalyptic number.

It is an amenable number.

90241549 is a deficient number, since it is larger than the sum of its proper divisors (1).

90241549 is an equidigital number, since it uses as much as digits as its factorization.

90241549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 90241549 is about 9499.5552001133. Note that the first 3 decimals coincide. The cubic root of 90241549 is about 448.5410346049.

The spelling of 90241549 in words is "ninety million, two hundred forty-one thousand, five hundred forty-nine".