74044561 has 2 divisors, whose sum is σ = 74044562. Its totient is φ = 74044560.

The previous prime is 74044541. The next prime is 74044573. The reversal of 74044561 is 16544047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58982400 + 15062161 = 7680^2 + 3881^2 .

It is a cyclic number.

It is not a de Polignac number, because 74044561 - 2²¹ = 71947409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74044541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37022280 + 37022281.

It is an arithmetic number, because the mean of its divisors is an integer number (37022281).

Almost surely, 2^74044561 is an apocalyptic number.

It is an amenable number.

74044561 is a deficient number, since it is larger than the sum of its proper divisors (1).

74044561 is an equidigital number, since it uses as much as digits as its factorization.

74044561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 74044561 is about 8604.9149327579. The cubic root of 74044561 is about 419.9178996742.

The spelling of 74044561 in words is "seventy-four million, forty-four thousand, five hundred sixty-one".