1147275457 has 4 divisors (see below), whose sum is σ = 1152199620. Its totient is φ = 1142351296.

The previous prime is 1147275449. The next prime is 1147275529. The reversal of 1147275457 is 7545727411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 434972736 + 712302721 = 20856^2 + 26689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147275457 - 2³ = 1147275449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147275257) 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, 2461732 + ... + 2462197.

It is an arithmetic number, because the mean of its divisors is an integer number (288049905).

Almost surely, 2^1147275457 is an apocalyptic number.

It is an amenable number.

1147275457 is a deficient number, since it is larger than the sum of its proper divisors (4924163).

1147275457 is an equidigital number, since it uses as much as digits as its factorization.

1147275457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924162.

The product of its digits is 274400, while the sum is 43.

The square root of 1147275457 is about 33871.4548993692. The cubic root of 1147275457 is about 1046.8615147793.

The spelling of 1147275457 in words is "one billion, one hundred forty-seven million, two hundred seventy-five thousand, four hundred fifty-seven".