23145253 has 4 divisors (see below), whose sum is σ = 23165548. Its totient is φ = 23124960.

The previous prime is 23145209. The next prime is 23145271. The reversal of 23145253 is 35254132.

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 2196324 + 20948929 = 1482^2 + 4577^2 .

It is a cyclic number.

It is not a de Polignac number, because 23145253 - 2¹³ = 23137061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8328 + ... + 10753.

It is an arithmetic number, because the mean of its divisors is an integer number (5791387).

Almost surely, 2^23145253 is an apocalyptic number.

It is an amenable number.

23145253 is a deficient number, since it is larger than the sum of its proper divisors (20295).

23145253 is a wasteful number, since it uses less digits than its factorization.

23145253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20294.

The product of its digits is 3600, while the sum is 25.

The square root of 23145253 is about 4810.9513612174. The cubic root of 23145253 is about 284.9841090965.

Adding to 23145253 its reverse (35254132), we get a palindrome (58399385).

The spelling of 23145253 in words is "twenty-three million, one hundred forty-five thousand, two hundred fifty-three".