1089523 has 2 divisors, whose sum is σ = 1089524. Its totient is φ = 1089522.

The previous prime is 1089509. The next prime is 1089551. The reversal of 1089523 is 3259801.

It is an a-pointer prime, because the next prime (1089551) can be obtained adding 1089523 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1089523 - 2¹³ = 1081331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1089491 and 1089500.

It is not a weakly prime, because it can be changed into another prime (1089503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544761 + 544762.

It is an arithmetic number, because the mean of its divisors is an integer number (544762).

2^1089523 is an apocalyptic number.

1089523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089523 is an equidigital number, since it uses as much as digits as its factorization.

1089523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1089523 is about 1043.8021843242. The cubic root of 1089523 is about 102.8992322051.

The spelling of 1089523 in words is "one million, eighty-nine thousand, five hundred twenty-three".