1145403555 has 8 divisors (see below), whose sum is σ = 1832645712. Its totient is φ = 610881888.

The previous prime is 1145403547. The next prime is 1145403559. The reversal of 1145403555 is 5553045411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1145403555 - 2³ = 1145403547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145403559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38180104 + ... + 38180133.

It is an arithmetic number, because the mean of its divisors is an integer number (229080714).

Almost surely, 2^1145403555 is an apocalyptic number.

1145403555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145403555 is a deficient number, since it is larger than the sum of its proper divisors (687242157).

1145403555 is an equidigital number, since it uses as much as digits as its factorization.

1145403555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76360245.

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 1145403555 is about 33843.8111772300. The cubic root of 1145403555 is about 1046.2918495213.

Adding to 1145403555 its reverse (5553045411), we get a palindrome (6698448966).

The spelling of 1145403555 in words is "one billion, one hundred forty-five million, four hundred three thousand, five hundred fifty-five".