1145303557 has 2 divisors, whose sum is σ = 1145303558. Its totient is φ = 1145303556.

The previous prime is 1145303519. The next prime is 1145303563. The reversal of 1145303557 is 7553035411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144739556 + 564001 = 33834^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145303557 - 2⁷ = 1145303429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145303507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572651778 + 572651779.

It is an arithmetic number, because the mean of its divisors is an integer number (572651779).

Almost surely, 2^1145303557 is an apocalyptic number.

It is an amenable number.

1145303557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145303557 is an equidigital number, since it uses as much as digits as its factorization.

1145303557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 1145303557 is about 33842.3337995476. Note that the first 3 decimals coincide. The cubic root of 1145303557 is about 1046.2614002422.

Adding to 1145303557 its reverse (7553035411), we get a palindrome (8698338968).

The spelling of 1145303557 in words is "one billion, one hundred forty-five million, three hundred three thousand, five hundred fifty-seven".