38912561 has 2 divisors, whose sum is σ = 38912562. Its totient is φ = 38912560.

The previous prime is 38912543. The next prime is 38912579. The reversal of 38912561 is 16521983.

It is a balanced prime because it is at equal distance from previous prime (38912543) and next prime (38912579).

It can be written as a sum of positive squares in only one way, i.e., 34586161 + 4326400 = 5881^2 + 2080^2 .

It is an emirp because it is prime and its reverse (16521983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38912561 - 2¹⁴ = 38896177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38912581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19456280 + 19456281.

It is an arithmetic number, because the mean of its divisors is an integer number (19456281).

Almost surely, 2^38912561 is an apocalyptic number.

It is an amenable number.

38912561 is a deficient number, since it is larger than the sum of its proper divisors (1).

38912561 is an equidigital number, since it uses as much as digits as its factorization.

38912561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 38912561 is about 6237.9933472231. The cubic root of 38912561 is about 338.8675152256.

The spelling of 38912561 in words is "thirty-eight million, nine hundred twelve thousand, five hundred sixty-one".