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1075213 = 8291297
BaseRepresentation
bin100000110100000001101
32000121220201
410012200031
5233401323
635013501
712065506
oct4064015
92017821
101075213
11674907
1243a291
132b8529
141ddbad
151638ad
hex10680d

1075213 has 4 divisors (see below), whose sum is σ = 1077340. Its totient is φ = 1073088.

The previous prime is 1075201. The next prime is 1075231. The reversal of 1075213 is 3125701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3125701 = 6151241.

It can be written as a sum of positive squares in 2 ways, for example, as 925444 + 149769 = 962^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 1075213 - 29 = 1074701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (269335).

21075213 is an apocalyptic number.

It is an amenable number.

1075213 is a deficient number, since it is larger than the sum of its proper divisors (2127).

1075213 is an equidigital number, since it uses as much as digits as its factorization.

1075213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1075213 is about 1036.9247802999. The cubic root of 1075213 is about 102.4467460825.

The spelling of 1075213 in words is "one million, seventy-five thousand, two hundred thirteen".

Divisors: 1 829 1297 1075213