1275803 has 2 divisors, whose sum is σ = 1275804. Its totient is φ = 1275802.

The previous prime is 1275779. The next prime is 1275817. The reversal of 1275803 is 3085721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275803 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1275823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637901 + 637902.

It is an arithmetic number, because the mean of its divisors is an integer number (637902).

2^1275803 is an apocalyptic number.

1275803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275803 is an equidigital number, since it uses as much as digits as its factorization.

1275803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1275803 is about 1129.5144974723. The cubic root of 1275803 is about 108.4579037782.

The spelling of 1275803 in words is "one million, two hundred seventy-five thousand, eight hundred three".