38556481 has 2 divisors, whose sum is σ = 38556482. Its totient is φ = 38556480.

The previous prime is 38556451. The next prime is 38556521. The reversal of 38556481 is 18465583.

It is an a-pointer prime, because the next prime (38556521) can be obtained adding 38556481 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33825856 + 4730625 = 5816^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 38556481 - 2¹⁹ = 38032193 is a prime.

It is a super-2 number, since 2×38556481² = 2973204454206722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38556431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19278240 + 19278241.

It is an arithmetic number, because the mean of its divisors is an integer number (19278241).

Almost surely, 2^38556481 is an apocalyptic number.

It is an amenable number.

38556481 is a deficient number, since it is larger than the sum of its proper divisors (1).

38556481 is an equidigital number, since it uses as much as digits as its factorization.

38556481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 40.

The square root of 38556481 is about 6209.3865236431. The cubic root of 38556481 is about 337.8307130515.

The spelling of 38556481 in words is "thirty-eight million, five hundred fifty-six thousand, four hundred eighty-one".