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2281217 = 6137397
BaseRepresentation
bin1000101100111100000001
311021220020112
420230330001
51040444332
6120521105
725250531
oct10547401
94256215
102281217
111318a04
12920195
1361b443
144354c1
15300db2
hex22cf01

2281217 has 4 divisors (see below), whose sum is σ = 2318676. Its totient is φ = 2243760.

The previous prime is 2281211. The next prime is 2281219. The reversal of 2281217 is 7121822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 1985281 = 544^2 + 1409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2281217 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2281192 and 2281201.

It is not an unprimeable number, because it can be changed into a prime (2281211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18638 + ... + 18759.

It is an arithmetic number, because the mean of its divisors is an integer number (579669).

22281217 is an apocalyptic number.

It is an amenable number.

2281217 is a deficient number, since it is larger than the sum of its proper divisors (37459).

2281217 is an equidigital number, since it uses as much as digits as its factorization.

2281217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37458.

The product of its digits is 448, while the sum is 23.

The square root of 2281217 is about 1510.3698222621. The cubic root of 2281217 is about 131.6403009395.

The spelling of 2281217 in words is "two million, two hundred eighty-one thousand, two hundred seventeen".

Divisors: 1 61 37397 2281217