1285271453 has 4 divisors (see below), whose sum is σ = 1285344348. Its totient is φ = 1285198560.

The previous prime is 1285271443. The next prime is 1285271497. The reversal of 1285271453 is 3541725821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 565583524 + 719687929 = 23782^2 + 26827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285271453 - 2²⁸ = 1016835997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285271443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8375 + ... + 51387.

It is an arithmetic number, because the mean of its divisors is an integer number (321336087).

Almost surely, 2^1285271453 is an apocalyptic number.

It is an amenable number.

1285271453 is a deficient number, since it is larger than the sum of its proper divisors (72895).

1285271453 is an equidigital number, since it uses as much as digits as its factorization.

1285271453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72894.

The product of its digits is 67200, while the sum is 38.

The square root of 1285271453 is about 35850.6827410581. The cubic root of 1285271453 is about 1087.2555181780.

The spelling of 1285271453 in words is "one billion, two hundred eighty-five million, two hundred seventy-one thousand, four hundred fifty-three".