1262563 has 2 divisors, whose sum is σ = 1262564. Its totient is φ = 1262562.

The previous prime is 1262557. The next prime is 1262581. The reversal of 1262563 is 3652621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1262563 - 2¹³ = 1254371 is a prime.

It is equal to p₉₇₃₆₀ and since 1262563 and 97360 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1262543) 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, 631281 + 631282.

It is an arithmetic number, because the mean of its divisors is an integer number (631282).

2^1262563 is an apocalyptic number.

1262563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262563 is an equidigital number, since it uses as much as digits as its factorization.

1262563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 1262563 is about 1123.6382869945. The cubic root of 1262563 is about 108.0814143773.

The spelling of 1262563 in words is "one million, two hundred sixty-two thousand, five hundred sixty-three".