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1082401 = 6011801
BaseRepresentation
bin100001000010000100001
32000222202221
410020100201
5234114101
635111041
712125455
oct4102041
92028687
101082401
1167a251
12442481
132bb898
14202665
15165aa1
hex108421

1082401 has 4 divisors (see below), whose sum is σ = 1084804. Its totient is φ = 1080000.

The previous prime is 1082399. The next prime is 1082429. The reversal of 1082401 is 1042801.

It can be divided in two parts, 108240 and 1, that added together give a square (108241 = 3292).

It is a happy number.

1082401 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1042801 = 8091289.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 564001 = 720^2 + 751^2 .

It is a 3-Lehmer number, since φ(1082401) divides (1082401-1)3.

It is a cyclic number.

It is not a de Polignac number, because 1082401 - 21 = 1082399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1082491) by changing a digit.

It is a nontrivial repunit in base 32.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (271201).

It is a Poulet number, since it divides 21082400-1.

21082401 is an apocalyptic number.

1082401 is the 601-st octagonal number.

It is an amenable number.

1082401 is a deficient number, since it is larger than the sum of its proper divisors (2403).

1082401 is an equidigital number, since it uses as much as digits as its factorization.

1082401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1082401 is about 1040.3850248826. The cubic root of 1082401 is about 102.6745311248.

The spelling of 1082401 in words is "one million, eighty-two thousand, four hundred one".

Divisors: 1 601 1801 1082401