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1055809 is a prime number
BaseRepresentation
bin100000001110001000001
31222122022001
410001301001
5232241214
634344001
711655106
oct4016101
91878261
101055809
11661277
1242b001
132ac751
141d6aad
1515cc74
hex101c41

1055809 has 2 divisors, whose sum is σ = 1055810. Its totient is φ = 1055808.

The previous prime is 1055801. The next prime is 1055827. The reversal of 1055809 is 9085501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 5184 = 1025^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055809 - 23 = 1055801 is a prime.

It is a super-2 number, since 2×10558092 = 2229465288962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527904 + 527905.

It is an arithmetic number, because the mean of its divisors is an integer number (527905).

21055809 is an apocalyptic number.

It is an amenable number.

1055809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055809 is an equidigital number, since it uses as much as digits as its factorization.

1055809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 1055809 is about 1027.5256687791. The cubic root of 1055809 is about 101.8267274783.

The spelling of 1055809 in words is "one million, fifty-five thousand, eight hundred nine".