74994553 has 2 divisors, whose sum is σ = 74994554. Its totient is φ = 74994552.

The previous prime is 74994529. The next prime is 74994581. The reversal of 74994553 is 35549947.

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., 65334889 + 9659664 = 8083^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 74994553 - 2⁹ = 74994041 is a prime.

It is not a weakly prime, because it can be changed into another prime (74994503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37497276 + 37497277.

It is an arithmetic number, because the mean of its divisors is an integer number (37497277).

Almost surely, 2^74994553 is an apocalyptic number.

It is an amenable number.

74994553 is a deficient number, since it is larger than the sum of its proper divisors (1).

74994553 is an equidigital number, since it uses as much as digits as its factorization.

74994553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 74994553 is about 8659.9395494426. The cubic root of 74994553 is about 421.7061231199.

The spelling of 74994553 in words is "seventy-four million, nine hundred ninety-four thousand, five hundred fifty-three".