1505563 has 2 divisors, whose sum is σ = 1505564. Its totient is φ = 1505562.

The previous prime is 1505521. The next prime is 1505587. The reversal of 1505563 is 3655051.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1505563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1502563) 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, 752781 + 752782.

It is an arithmetic number, because the mean of its divisors is an integer number (752782).

2^1505563 is an apocalyptic number.

1505563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1505563 is an equidigital number, since it uses as much as digits as its factorization.

1505563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1505563 is about 1227.0138548525. The cubic root of 1505563 is about 114.6127617929.

The spelling of 1505563 in words is "one million, five hundred five thousand, five hundred sixty-three".