890550161 has 2 divisors, whose sum is σ = 890550162. Its totient is φ = 890550160.

The previous prime is 890550139. The next prime is 890550209. The reversal of 890550161 is 161055098.

890550161 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., 759333136 + 131217025 = 27556^2 + 11455^2 .

It is a cyclic number.

It is not a de Polignac number, because 890550161 - 2²² = 886355857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (890550061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445275080 + 445275081.

It is an arithmetic number, because the mean of its divisors is an integer number (445275081).

Almost surely, 2^890550161 is an apocalyptic number.

It is an amenable number.

890550161 is a deficient number, since it is larger than the sum of its proper divisors (1).

890550161 is an equidigital number, since it uses as much as digits as its factorization.

890550161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 890550161 is about 29842.0870751360. The cubic root of 890550161 is about 962.0983330139.

The spelling of 890550161 in words is "eight hundred ninety million, five hundred fifty thousand, one hundred sixty-one".