23043545 has 32 divisors (see below), whose sum is σ = 33246720. Its totient is φ = 14999040.

The previous prime is 23043533. The next prime is 23043569. The reversal of 23043545 is 54534032.

It is not a de Polignac number, because 23043545 - 2⁴ = 23043529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73940 + ... + 74250.

It is an arithmetic number, because the mean of its divisors is an integer number (1038960).

Almost surely, 2^23043545 is an apocalyptic number.

It is an amenable number.

23043545 is a deficient number, since it is larger than the sum of its proper divisors (10203175).

23043545 is a wasteful number, since it uses less digits than its factorization.

23043545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 23043545 is about 4800.3692566302. The cubic root of 23043545 is about 284.5660575769.

Adding to 23043545 its reverse (54534032), we get a palindrome (77577577).

The spelling of 23043545 in words is "twenty-three million, forty-three thousand, five hundred forty-five".