1355803 has 2 divisors, whose sum is σ = 1355804. Its totient is φ = 1355802.

The previous prime is 1355777. The next prime is 1355807. The reversal of 1355803 is 3085531.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3085531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1355803 - 2⁵ = 1355771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677901 + 677902.

It is an arithmetic number, because the mean of its divisors is an integer number (677902).

2^1355803 is an apocalyptic number.

1355803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355803 is an equidigital number, since it uses as much as digits as its factorization.

1355803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1355803 is about 1164.3895396301. The cubic root of 1355803 is about 110.6790773730.

The spelling of 1355803 in words is "one million, three hundred fifty-five thousand, eight hundred three".