1253278303 has 4 divisors (see below), whose sum is σ = 1307768688. Its totient is φ = 1198787920.

The previous prime is 1253278289. The next prime is 1253278307. The reversal of 1253278303 is 3038723521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253278303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253278307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27245158 + ... + 27245203.

It is an arithmetic number, because the mean of its divisors is an integer number (326942172).

Almost surely, 2^1253278303 is an apocalyptic number.

1253278303 is a deficient number, since it is larger than the sum of its proper divisors (54490385).

1253278303 is an equidigital number, since it uses as much as digits as its factorization.

1253278303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54490384.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1253278303 is about 35401.6709068936. The cubic root of 1253278303 is about 1078.1582415773.

The spelling of 1253278303 in words is "one billion, two hundred fifty-three million, two hundred seventy-eight thousand, three hundred three".