1145257133 has 2 divisors, whose sum is σ = 1145257134. Its totient is φ = 1145257132.

The previous prime is 1145257097. The next prime is 1145257159. The reversal of 1145257133 is 3317525411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 842566729 + 302690404 = 29027^2 + 17398^2 .

It is an emirp because it is prime and its reverse (3317525411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145257133 - 2³⁰ = 71515309 is a prime.

It is a super-2 number, since 2×1145257133² = 2623227801374759378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145257133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145250133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572628566 + 572628567.

It is an arithmetic number, because the mean of its divisors is an integer number (572628567).

Almost surely, 2^1145257133 is an apocalyptic number.

It is an amenable number.

1145257133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145257133 is an equidigital number, since it uses as much as digits as its factorization.

1145257133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 1145257133 is about 33841.6479060935. The cubic root of 1145257133 is about 1046.2472635838.

The spelling of 1145257133 in words is "one billion, one hundred forty-five million, two hundred fifty-seven thousand, one hundred thirty-three".