1261363 has 2 divisors, whose sum is σ = 1261364. Its totient is φ = 1261362.

The previous prime is 1261357. The next prime is 1261373. The reversal of 1261363 is 3631621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1261363 - 2⁹ = 1260851 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1261313) 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, 630681 + 630682.

It is an arithmetic number, because the mean of its divisors is an integer number (630682).

2^1261363 is an apocalyptic number.

1261363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261363 is an equidigital number, since it uses as much as digits as its factorization.

1261363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

The square root of 1261363 is about 1123.1041803858. The cubic root of 1261363 is about 108.0471616155.

Adding to 1261363 its reverse (3631621), we get a palindrome (4892984).

The spelling of 1261363 in words is "one million, two hundred sixty-one thousand, three hundred sixty-three".