1201559 has 2 divisors, whose sum is σ = 1201560. Its totient is φ = 1201558.

The previous prime is 1201553. The next prime is 1201567. The reversal of 1201559 is 9551021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201559 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600779 + 600780.

It is an arithmetic number, because the mean of its divisors is an integer number (600780).

2^1201559 is an apocalyptic number.

1201559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201559 is an equidigital number, since it uses as much as digits as its factorization.

1201559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 1201559 is about 1096.1564669334. The cubic root of 1201559 is about 106.3118560235.

The spelling of 1201559 in words is "one million, two hundred one thousand, five hundred fifty-nine".