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9030161 = 743761
BaseRepresentation
bin100010011100…
…101000010001
3121222210001102
4202130220101
54302431121
6521314145
7136520000
oct42345021
917883042
109030161
115108548
123035955
131b422ba
1412b0c37
15bd590b
hex89ca11

9030161 has 10 divisors (see below), whose sum is σ = 10537362. Its totient is φ = 7738080.

The previous prime is 9030143. The next prime is 9030163. The reversal of 9030161 is 1610309.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 1500625 = 2744^2 + 1225^2 .

It is not a de Polignac number, because 9030161 - 218 = 8768017 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9030163) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 521 + ... + 4281.

Almost surely, 29030161 is an apocalyptic number.

It is an amenable number.

9030161 is a deficient number, since it is larger than the sum of its proper divisors (1507201).

9030161 is an frugal number, since it uses more digits than its factorization.

9030161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 9030161 is about 3005.0226288665. The cubic root of 9030161 is about 208.2404839942.

The spelling of 9030161 in words is "nine million, thirty thousand, one hundred sixty-one".

Divisors: 1 7 49 343 2401 3761 26327 184289 1290023 9030161