23454545 has 8 divisors (see below), whose sum is σ = 28228200. Its totient is φ = 18708480.

The previous prime is 23454539. The next prime is 23454553. The reversal of 23454545 is 54545432.

23454545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 1336336 + 22118209 = 1156^2 + 4703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23454545 - 2⁸ = 23454289 is a prime.

It is an alternating number because its digits alternate between even and odd.

23454545 is a modest number, since divided by 4545 gives 2345 as remainder.

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 7 ways as a sum of consecutive naturals, for example, 4976 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (3528525).

Almost surely, 2^23454545 is an apocalyptic number.

It is an amenable number.

23454545 is a deficient number, since it is larger than the sum of its proper divisors (4773655).

23454545 is a wasteful number, since it uses less digits than its factorization.

23454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13795.

The product of its digits is 48000, while the sum is 32.

The square root of 23454545 is about 4842.9892628417. The cubic root of 23454545 is about 286.2479185982.

Adding to 23454545 its reverse (54545432), we get a palindrome (77999977).

The spelling of 23454545 in words is "twenty-three million, four hundred fifty-four thousand, five hundred forty-five".