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1075621 is a prime number
BaseRepresentation
bin100000110100110100101
32000122110211
410012212211
5233404441
635015421
712066631
oct4064645
92018424
101075621
11675148
1243a571
132b8781
141dddc1
15163a81
hex1069a5

1075621 has 2 divisors, whose sum is σ = 1075622. Its totient is φ = 1075620.

The previous prime is 1075619. The next prime is 1075643. The reversal of 1075621 is 1265701.

It is an a-pointer prime, because the next prime (1075643) can be obtained adding 1075621 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 923521 + 152100 = 961^2 + 390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1075621 - 21 = 1075619 is a prime.

It is a super-3 number, since 3×10756213 = 3733353144920124183, which contains 333 as substring.

Together with 1075619, it forms a pair of twin primes.

It is a Chen prime.

1075621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1075592 and 1075601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1075601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537810 + 537811.

It is an arithmetic number, because the mean of its divisors is an integer number (537811).

21075621 is an apocalyptic number.

It is an amenable number.

1075621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075621 is an equidigital number, since it uses as much as digits as its factorization.

1075621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1075621 is about 1037.1214972220. The cubic root of 1075621 is about 102.4597025809.

The spelling of 1075621 in words is "one million, seventy-five thousand, six hundred twenty-one".