838561 has 2 divisors, whose sum is σ = 838562. Its totient is φ = 838560.

The previous prime is 838553. The next prime is 838571. The reversal of 838561 is 165838.

838561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 28561 = 900^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 838561 - 2³ = 838553 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (838571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419280 + 419281.

It is an arithmetic number, because the mean of its divisors is an integer number (419281).

2⁸³⁸⁵⁶¹ is an apocalyptic number.

It is an amenable number.

838561 is a deficient number, since it is larger than the sum of its proper divisors (1).

838561 is an equidigital number, since it uses as much as digits as its factorization.

838561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 838561 is about 915.7297636312. The cubic root of 838561 is about 94.2999697497.

The spelling of 838561 in words is "eight hundred thirty-eight thousand, five hundred sixty-one".