1145135555 has 16 divisors (see below), whose sum is σ = 1459620000. Its totient is φ = 859479552.

The previous prime is 1145135527. The next prime is 1145135561. The reversal of 1145135555 is 5555315411.

It is a cyclic number.

It is not a de Polignac number, because 1145135555 - 2³⁰ = 71393731 is a prime.

It is a super-2 number, since 2×1145135555² = 2622670878650316050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5696 + ... + 48194.

It is an arithmetic number, because the mean of its divisors is an integer number (91226250).

Almost surely, 2^1145135555 is an apocalyptic number.

1145135555 is a deficient number, since it is larger than the sum of its proper divisors (314484445).

1145135555 is a wasteful number, since it uses less digits than its factorization.

1145135555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42838.

The product of its digits is 37500, while the sum is 35.

The square root of 1145135555 is about 33839.8515806438. The cubic root of 1145135555 is about 1046.2102398310.

The spelling of 1145135555 in words is "one billion, one hundred forty-five million, one hundred thirty-five thousand, five hundred fifty-five".