23481545 has 8 divisors (see below), whose sum is σ = 28564296. Its totient is φ = 18527616.

The previous prime is 23481527. The next prime is 23481547. The reversal of 23481545 is 54518432.

It can be written as a sum of positive squares in 4 ways, for example, as 9223369 + 14258176 = 3037^2 + 3776^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23481545 - 2¹⁰ = 23480521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23481547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31802 + ... + 32531.

It is an arithmetic number, because the mean of its divisors is an integer number (3570537).

Almost surely, 2^23481545 is an apocalyptic number.

It is an amenable number.

23481545 is a deficient number, since it is larger than the sum of its proper divisors (5082751).

23481545 is an equidigital number, since it uses as much as digits as its factorization.

23481545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64411.

The product of its digits is 19200, while the sum is 32.

The square root of 23481545 is about 4845.7759956482. The cubic root of 23481545 is about 286.3577157972.

Adding to 23481545 its reverse (54518432), we get a palindrome (77999977).

The spelling of 23481545 in words is "twenty-three million, four hundred eighty-one thousand, five hundred forty-five".