23445155 has 4 divisors (see below), whose sum is σ = 28134192. Its totient is φ = 18756120.

The previous prime is 23445143. The next prime is 23445179. The reversal of 23445155 is 55154432.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23445155 - 2⁴ = 23445139 is a prime.

It is a Duffinian number.

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, 2344511 + ... + 2344520.

It is an arithmetic number, because the mean of its divisors is an integer number (7033548).

Almost surely, 2^23445155 is an apocalyptic number.

23445155 is a deficient number, since it is larger than the sum of its proper divisors (4689037).

23445155 is an equidigital number, since it uses as much as digits as its factorization.

23445155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689036.

The product of its digits is 12000, while the sum is 29.

The square root of 23445155 is about 4842.0197232147. The cubic root of 23445155 is about 286.2097138248.

Adding to 23445155 its reverse (55154432), we get a palindrome (78599587).

The spelling of 23445155 in words is "twenty-three million, four hundred forty-five thousand, one hundred fifty-five".