74885549 has 2 divisors, whose sum is σ = 74885550. Its totient is φ = 74885548.

The previous prime is 74885537. The next prime is 74885597. The reversal of 74885549 is 94558847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71944324 + 2941225 = 8482^2 + 1715^2 .

It is an emirp because it is prime and its reverse (94558847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74885549 - 2⁴ = 74885533 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74885497 and 74885506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74885749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37442774 + 37442775.

It is an arithmetic number, because the mean of its divisors is an integer number (37442775).

Almost surely, 2^74885549 is an apocalyptic number.

It is an amenable number.

74885549 is a deficient number, since it is larger than the sum of its proper divisors (1).

74885549 is an equidigital number, since it uses as much as digits as its factorization.

74885549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 50.

The square root of 74885549 is about 8653.6436834434. The cubic root of 74885549 is about 421.5017085252.

The spelling of 74885549 in words is "seventy-four million, eight hundred eighty-five thousand, five hundred forty-nine".