23523145 has 8 divisors (see below), whose sum is σ = 28545480. Its totient is φ = 18606720.

The previous prime is 23523139. The next prime is 23523151. The reversal of 23523145 is 54132532.

It is an interprime number because it is at equal distance from previous prime (23523139) and next prime (23523151).

It can be written as a sum of positive squares in 4 ways, for example, as 1320201 + 22202944 = 1149^2 + 4712^2 .

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

It is not a de Polignac number, because 23523145 - 2⁹ = 23522633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25986 + ... + 26875.

It is an arithmetic number, because the mean of its divisors is an integer number (3568185).

Almost surely, 2^23523145 is an apocalyptic number.

It is an amenable number.

23523145 is a deficient number, since it is larger than the sum of its proper divisors (5022335).

23523145 is an equidigital number, since it uses as much as digits as its factorization.

23523145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52955.

The product of its digits is 3600, while the sum is 25.

The square root of 23523145 is about 4850.0664943895. The cubic root of 23523145 is about 286.5267201956.

Adding to 23523145 its reverse (54132532), we get a palindrome (77655677).

The spelling of 23523145 in words is "twenty-three million, five hundred twenty-three thousand, one hundred forty-five".