23163545 has 4 divisors (see below), whose sum is σ = 27796260. Its totient is φ = 18530832.

The previous prime is 23163529. The next prime is 23163559. The reversal of 23163545 is 54536132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16908544 + 6255001 = 4112^2 + 2501^2 .

It is a cyclic number.

It is not a de Polignac number, because 23163545 - 2⁴ = 23163529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316350 + ... + 2316359.

It is an arithmetic number, because the mean of its divisors is an integer number (6949065).

Almost surely, 2^23163545 is an apocalyptic number.

It is an amenable number.

23163545 is a deficient number, since it is larger than the sum of its proper divisors (4632715).

23163545 is an equidigital number, since it uses as much as digits as its factorization.

23163545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632714.

The product of its digits is 10800, while the sum is 29.

The square root of 23163545 is about 4812.8520650442. The cubic root of 23163545 is about 285.0591648995.

Adding to 23163545 its reverse (54536132), we get a palindrome (77699677).

The spelling of 23163545 in words is "twenty-three million, one hundred sixty-three thousand, five hundred forty-five".