23170045 has 4 divisors (see below), whose sum is σ = 27804060. Its totient is φ = 18536032.

The previous prime is 23170027. The next prime is 23170073. The reversal of 23170045 is 54007132.

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 15452761 + 7717284 = 3931^2 + 2778^2 .

It is a cyclic number.

It is not a de Polignac number, because 23170045 - 2⁷ = 23169917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23169998 and 23170025.

It is a congruent 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, 2317000 + ... + 2317009.

It is an arithmetic number, because the mean of its divisors is an integer number (6951015).

Almost surely, 2^23170045 is an apocalyptic number.

It is an amenable number.

23170045 is a deficient number, since it is larger than the sum of its proper divisors (4634015).

23170045 is an equidigital number, since it uses as much as digits as its factorization.

23170045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634014.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 23170045 is about 4813.5272929526. The cubic root of 23170045 is about 285.0858262084.

Adding to 23170045 its reverse (54007132), we get a palindrome (77177177).

The spelling of 23170045 in words is "twenty-three million, one hundred seventy thousand, forty-five".