23145145 has 8 divisors (see below), whose sum is σ = 27808704. Its totient is φ = 18493104.

The previous prime is 23145119. The next prime is 23145167. The reversal of 23145145 is 54154132.

It is a happy number.

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 23145145 - 2⁵ = 23145113 is a prime.

It is a Duffinian number.

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, 2442 + ... + 7228.

It is an arithmetic number, because the mean of its divisors is an integer number (3476088).

Almost surely, 2^23145145 is an apocalyptic number.

It is an amenable number.

23145145 is a deficient number, since it is larger than the sum of its proper divisors (4663559).

23145145 is an equidigital number, since it uses as much as digits as its factorization.

23145145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759.

The product of its digits is 2400, while the sum is 25.

The square root of 23145145 is about 4810.9401368132. The cubic root of 23145145 is about 284.9836658331.

Adding to 23145145 its reverse (54154132), we get a palindrome (77299277).

The spelling of 23145145 in words is "twenty-three million, one hundred forty-five thousand, one hundred forty-five".