1355579 has 2 divisors, whose sum is σ = 1355580.
Its totient is φ = 1355578.
The previous prime is 1355573. The next prime is 1355591. The reversal of 1355579 is 9755531.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1355579 - 28 = 1355323 is a prime.
It is a Chen prime.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (1355573) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is an upside-down number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677789 + 677790.
It is an arithmetic number, because the mean of its divisors is an integer number (677790).
21355579 is an apocalyptic number.
1355579 is a deficient number, since it is larger than the sum of its proper divisors (1).
1355579 is an equidigital number, since it uses as much as digits as its factorization.
1355579 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 23625, while the sum is 35.
The square root of 1355579 is about 1164.2933479154.
The cubic root of 1355579 is about 110.6729817286.
The spelling of 1355579 in words is "one million, three hundred fifty-five thousand, five hundred seventy-nine".