1015559 has 2 divisors, whose sum is σ = 1015560. Its totient is φ = 1015558.

The previous prime is 1015549. The next prime is 1015561. The reversal of 1015559 is 9555101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1015559 - 2¹⁶ = 950023 is a prime.

Together with 1015561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1015549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507779 + 507780.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

2^1015559 is an apocalyptic number.

1015559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015559 is an equidigital number, since it uses as much as digits as its factorization.

1015559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 1015559 is about 1007.7494728354. The cubic root of 1015559 is about 100.5159665399.

The spelling of 1015559 in words is "one million, fifteen thousand, five hundred fifty-nine".