23275645 has 4 divisors (see below), whose sum is σ = 27930780. Its totient is φ = 18620512.

The previous prime is 23275643. The next prime is 23275649. The reversal of 23275645 is 54657232.

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 17214201 + 6061444 = 4149^2 + 2462^2 .

It is a cyclic number.

It is not a de Polignac number, because 23275645 - 2¹ = 23275643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23275645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23275643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2327560 + ... + 2327569.

It is an arithmetic number, because the mean of its divisors is an integer number (6982695).

Almost surely, 2^23275645 is an apocalyptic number.

It is an amenable number.

23275645 is a deficient number, since it is larger than the sum of its proper divisors (4655135).

23275645 is an equidigital number, since it uses as much as digits as its factorization.

23275645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655134.

The product of its digits is 50400, while the sum is 34.

The square root of 23275645 is about 4824.4839102229. The cubic root of 23275645 is about 285.5182731170.

The spelling of 23275645 in words is "twenty-three million, two hundred seventy-five thousand, six hundred forty-five".