1145548557 has 12 divisors (see below), whose sum is σ = 1726624224. Its totient is φ = 730494600.

The previous prime is 1145548541. The next prime is 1145548561. The reversal of 1145548557 is 7558455411.

1145548557 is a `hidden beast` number, since 1 + 1 + 4 + 55 + 48 + 557 = 666.

It is not a de Polignac number, because 1145548557 - 2⁴ = 1145548541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145548507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2766819 + ... + 2767232.

It is an arithmetic number, because the mean of its divisors is an integer number (143885352).

Almost surely, 2^1145548557 is an apocalyptic number.

It is an amenable number.

1145548557 is a deficient number, since it is larger than the sum of its proper divisors (581075667).

1145548557 is a wasteful number, since it uses less digits than its factorization.

1145548557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534080 (or 5534077 counting only the distinct ones).

The product of its digits is 560000, while the sum is 45.

The square root of 1145548557 is about 33845.9533327102. The cubic root of 1145548557 is about 1046.3359993200.

The spelling of 1145548557 in words is "one billion, one hundred forty-five million, five hundred forty-eight thousand, five hundred fifty-seven".