1255503 has 8 divisors (see below), whose sum is σ = 1679616. Its totient is φ = 834200.

The previous prime is 1255477. The next prime is 1255519. The reversal of 1255503 is 3055521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255503 - 2¹⁰ = 1254479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808 + ... + 1778.

It is an arithmetic number, because the mean of its divisors is an integer number (209952).

2^1255503 is an apocalyptic number.

1255503 is a deficient number, since it is larger than the sum of its proper divisors (424113).

1255503 is an equidigital number, since it uses as much as digits as its factorization.

1255503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 1255503 is about 1120.4923025171. The cubic root of 1255503 is about 107.8795811477.

The spelling of 1255503 in words is "one million, two hundred fifty-five thousand, five hundred three".