23217755 has 8 divisors (see below), whose sum is σ = 30394224. Its totient is φ = 16885600.

The previous prime is 23217749. The next prime is 23217757. The reversal of 23217755 is 55771232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23217755 - 2¹⁶ = 23152219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23217757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211016 + ... + 211125.

It is an arithmetic number, because the mean of its divisors is an integer number (3799278).

Almost surely, 2^23217755 is an apocalyptic number.

23217755 is a deficient number, since it is larger than the sum of its proper divisors (7176469).

23217755 is a wasteful number, since it uses less digits than its factorization.

23217755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422157.

The product of its digits is 14700, while the sum is 32.

The square root of 23217755 is about 4818.4805696402. The cubic root of 23217755 is about 285.2813677613.

Adding to 23217755 its reverse (55771232), we get a palindrome (78988987).

It can be divided in two parts, 232177 and 55, that added together give a palindrome (232232).

The spelling of 23217755 in words is "twenty-three million, two hundred seventeen thousand, seven hundred fifty-five".