1145122545 has 16 divisors (see below), whose sum is σ = 2093938560. Its totient is φ = 523484544.

The previous prime is 1145122513. The next prime is 1145122591. The reversal of 1145122545 is 5452215411.

It is not a de Polignac number, because 1145122545 - 2⁵ = 1145122513 is a prime.

It is a super-2 number, since 2×1145122545² = 2622611286134554050, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5452860 + ... + 5453069.

It is an arithmetic number, because the mean of its divisors is an integer number (130871160).

Almost surely, 2^1145122545 is an apocalyptic number.

1145122545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145122545 is a deficient number, since it is larger than the sum of its proper divisors (948816015).

1145122545 is a wasteful number, since it uses less digits than its factorization.

1145122545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905944.

The product of its digits is 8000, while the sum is 30.

The square root of 1145122545 is about 33839.6593511223. The cubic root of 1145122545 is about 1046.2062777828.

Adding to 1145122545 its reverse (5452215411), we get a palindrome (6597337956).

The spelling of 1145122545 in words is "one billion, one hundred forty-five million, one hundred twenty-two thousand, five hundred forty-five".