74556481 has 2 divisors, whose sum is σ = 74556482. Its totient is φ = 74556480.

The previous prime is 74556473. The next prime is 74556497. The reversal of 74556481 is 18465547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47610000 + 26946481 = 6900^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 74556481 - 2³ = 74556473 is a prime.

It is a super-2 number, since 2×74556481² = 11117337718206722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74556421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37278240 + 37278241.

It is an arithmetic number, because the mean of its divisors is an integer number (37278241).

Almost surely, 2^74556481 is an apocalyptic number.

It is an amenable number.

74556481 is a deficient number, since it is larger than the sum of its proper divisors (1).

74556481 is an equidigital number, since it uses as much as digits as its factorization.

74556481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 74556481 is about 8634.6094874059. The cubic root of 74556481 is about 420.8834032595.

The spelling of 74556481 in words is "seventy-four million, five hundred fifty-six thousand, four hundred eighty-one".