74241553 has 2 divisors, whose sum is σ = 74241554. Its totient is φ = 74241552.

The previous prime is 74241523. The next prime is 74241581. The reversal of 74241553 is 35514247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43138624 + 31102929 = 6568^2 + 5577^2 .

It is an emirp because it is prime and its reverse (35514247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74241553 is a prime.

It is not a weakly prime, because it can be changed into another prime (74241523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37120776 + 37120777.

It is an arithmetic number, because the mean of its divisors is an integer number (37120777).

Almost surely, 2^74241553 is an apocalyptic number.

It is an amenable number.

74241553 is a deficient number, since it is larger than the sum of its proper divisors (1).

74241553 is an equidigital number, since it uses as much as digits as its factorization.

74241553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 74241553 is about 8616.3538112127. The cubic root of 74241553 is about 420.2899603903.

The spelling of 74241553 in words is "seventy-four million, two hundred forty-one thousand, five hundred fifty-three".