1001323545 has 16 divisors (see below), whose sum is σ = 1696360320. Its totient is φ = 502625024.

The previous prime is 1001323523. The next prime is 1001323577. The reversal of 1001323545 is 5453231001.

It is a cyclic number.

It is not a de Polignac number, because 1001323545 - 2⁷ = 1001323417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963125 + ... + 1963634.

It is an arithmetic number, because the mean of its divisors is an integer number (106022520).

Almost surely, 2^1001323545 is an apocalyptic number.

1001323545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001323545 is a deficient number, since it is larger than the sum of its proper divisors (695036775).

1001323545 is a wasteful number, since it uses less digits than its factorization.

1001323545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926784.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1001323545 is about 31643.6967657068. The cubic root of 1001323545 is about 1000.4409871684.

Adding to 1001323545 its reverse (5453231001), we get a palindrome (6454554546).

The spelling of 1001323545 in words is "one billion, one million, three hundred twenty-three thousand, five hundred forty-five".