23365145 has 4 divisors (see below), whose sum is σ = 28038180. Its totient is φ = 18692112.

The previous prime is 23365127. The next prime is 23365151. The reversal of 23365145 is 54156332.

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 12369289 + 10995856 = 3517^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 23365145 - 2¹² = 23361049 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, 2336510 + ... + 2336519.

It is an arithmetic number, because the mean of its divisors is an integer number (7009545).

Almost surely, 2^23365145 is an apocalyptic number.

It is an amenable number.

23365145 is a deficient number, since it is larger than the sum of its proper divisors (4673035).

23365145 is an equidigital number, since it uses as much as digits as its factorization.

23365145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673034.

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

The square root of 23365145 is about 4833.7506141712. The cubic root of 23365145 is about 285.8837653413.

The spelling of 23365145 in words is "twenty-three million, three hundred sixty-five thousand, one hundred forty-five".