23170553 has 4 divisors (see below), whose sum is σ = 26480640. Its totient is φ = 19860468.

The previous prime is 23170523. The next prime is 23170559. The reversal of 23170553 is 35507132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23170553 - 2¹² = 23166457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23170559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655033 + ... + 1655046.

It is an arithmetic number, because the mean of its divisors is an integer number (6620160).

Almost surely, 2^23170553 is an apocalyptic number.

It is an amenable number.

23170553 is a deficient number, since it is larger than the sum of its proper divisors (3310087).

23170553 is an equidigital number, since it uses as much as digits as its factorization.

23170553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310086.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 23170553 is about 4813.5800606202. The cubic root of 23170553 is about 285.0879096821.

Adding to 23170553 its reverse (35507132), we get a palindrome (58677685).

The spelling of 23170553 in words is "twenty-three million, one hundred seventy thousand, five hundred fifty-three".