223928553 has 4 divisors (see below), whose sum is σ = 298571408. Its totient is φ = 149285700.

The previous prime is 223928527. The next prime is 223928557. The reversal of 223928553 is 355829322.

223928553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 223928553 - 2⁸ = 223928297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223928557) 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, 37321423 + ... + 37321428.

It is an arithmetic number, because the mean of its divisors is an integer number (74642852).

Almost surely, 2^223928553 is an apocalyptic number.

It is an amenable number.

223928553 is a deficient number, since it is larger than the sum of its proper divisors (74642855).

223928553 is an equidigital number, since it uses as much as digits as its factorization.

223928553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74642854.

The product of its digits is 129600, while the sum is 39.

The square root of 223928553 is about 14964.2424799921. The cubic root of 223928553 is about 607.2532175171.

The spelling of 223928553 in words is "two hundred twenty-three million, nine hundred twenty-eight thousand, five hundred fifty-three".