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BaseRepresentation
bin10001001000001110110001
322110010100021
4101020032301
52122141121
6240123441
753110564
oct21101661
98403307
104490161
112597585
121606581
13c12a00
1484c4db
155da641
hex4483b1

4490161 has 9 divisors (see below), whose sum is σ = 4892139. Its totient is φ = 4119336.

The previous prime is 4490147. The next prime is 4490179. The reversal of 4490161 is 1610944.

The square root of 4490161 is 2119.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 3825936 = 815^2 + 1956^2 .

It is a de Polignac number, because none of the positive numbers 2k-4490161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4490131) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27466 + ... + 27628.

It is an arithmetic number, because the mean of its divisors is an integer number (543571).

Almost surely, 24490161 is an apocalyptic number.

4490161 is the 2119-th square number.

4490161 is the 1060-th centered octagonal number.

It is an amenable number.

4490161 is a deficient number, since it is larger than the sum of its proper divisors (401978).

4490161 is an equidigital number, since it uses as much as digits as its factorization.

4490161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The cubic root of 4490161 is about 164.9759499688.

Multiplying 4490161 by its sum of digits (25), we get a square (112254025 = 105952).

The spelling of 4490161 in words is "four million, four hundred ninety thousand, one hundred sixty-one".

Divisors: 1 13 163 169 2119 26569 27547 345397 4490161