23020553 has 4 divisors (see below), whose sum is σ = 23510400. Its totient is φ = 22530708.

The previous prime is 23020511. The next prime is 23020573. The reversal of 23020553 is 35502032.

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 23020553 - 2⁶ = 23020489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23020573) 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, 244853 + ... + 244946.

It is an arithmetic number, because the mean of its divisors is an integer number (5877600).

Almost surely, 2^23020553 is an apocalyptic number.

It is an amenable number.

23020553 is a deficient number, since it is larger than the sum of its proper divisors (489847).

23020553 is an equidigital number, since it uses as much as digits as its factorization.

23020553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489846.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 23020553 is about 4797.9738431967. The cubic root of 23020553 is about 284.4713829072.

Adding to 23020553 its reverse (35502032), we get a palindrome (58522585).

The spelling of 23020553 in words is "twenty-three million, twenty thousand, five hundred fifty-three".