228445453 has 4 divisors (see below), whose sum is σ = 238377888. Its totient is φ = 218513020.

The previous prime is 228445447. The next prime is 228445471. The reversal of 228445453 is 354544822.

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, and also an emirpimes, since its reverse is a distinct semiprime: 354544822 = 2 ⋅177272411.

It is a cyclic number.

It is not a de Polignac number, because 228445453 - 2⁹ = 228444941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228445403) 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, 4966183 + ... + 4966228.

It is an arithmetic number, because the mean of its divisors is an integer number (59594472).

Almost surely, 2^228445453 is an apocalyptic number.

228445453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

228445453 is a deficient number, since it is larger than the sum of its proper divisors (9932435).

228445453 is an equidigital number, since it uses as much as digits as its factorization.

228445453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932434.

The product of its digits is 153600, while the sum is 37.

The square root of 228445453 is about 15114.4120957449. The cubic root of 228445453 is about 611.3090699198.

The spelling of 228445453 in words is "two hundred twenty-eight million, four hundred forty-five thousand, four hundred fifty-three".