1145021505 has 16 divisors (see below), whose sum is σ = 1834907904. Its totient is φ = 609720320.

The previous prime is 1145021483. The next prime is 1145021509. The reversal of 1145021505 is 5051205411.

It is not a de Polignac number, because 1145021505 - 2⁶ = 1145021441 is a prime.

It is a super-2 number, since 2×1145021505² = 2622148493824930050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1145021509) 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 15 ways as a sum of consecutive naturals, for example, 49929 + ... + 69158.

It is an arithmetic number, because the mean of its divisors is an integer number (114681744).

Almost surely, 2^1145021505 is an apocalyptic number.

1145021505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145021505 is a deficient number, since it is larger than the sum of its proper divisors (689886399).

1145021505 is a wasteful number, since it uses less digits than its factorization.

1145021505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119736.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1145021505 is about 33838.1663953590. The cubic root of 1145021505 is about 1046.1755061732.

Adding to 1145021505 its reverse (5051205411), we get a palindrome (6196226916).

The spelling of 1145021505 in words is "one billion, one hundred forty-five million, twenty-one thousand, five hundred five".