74552213 has 2 divisors, whose sum is σ = 74552214. Its totient is φ = 74552212.

The previous prime is 74552209. The next prime is 74552263. The reversal of 74552213 is 31225547.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64673764 + 9878449 = 8042^2 + 3143^2 .

It is a cyclic number.

It is not a de Polignac number, because 74552213 - 2² = 74552209 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74552263) 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, 37276106 + 37276107.

It is an arithmetic number, because the mean of its divisors is an integer number (37276107).

Almost surely, 2^74552213 is an apocalyptic number.

It is an amenable number.

74552213 is a deficient number, since it is larger than the sum of its proper divisors (1).

74552213 is an equidigital number, since it uses as much as digits as its factorization.

74552213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 74552213 is about 8634.3623389339. The cubic root of 74552213 is about 420.8753719226.

The spelling of 74552213 in words is "seventy-four million, five hundred fifty-two thousand, two hundred thirteen".