228451 has 2 divisors, whose sum is σ = 228452. Its totient is φ = 228450.

The previous prime is 228443. The next prime is 228457. The reversal of 228451 is 154822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228451 - 2³ = 228443 is a prime.

It is not a weakly prime, because it can be changed into another prime (228457) 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 as a sum of consecutive naturals, namely, 114225 + 114226.

It is an arithmetic number, because the mean of its divisors is an integer number (114226).

2²²⁸⁴⁵¹ is an apocalyptic number.

228451 is a deficient number, since it is larger than the sum of its proper divisors (1).

228451 is an equidigital number, since it uses as much as digits as its factorization.

228451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640, while the sum is 22.

The square root of 228451 is about 477.9654799251. The cubic root of 228451 is about 61.1314017715.

The spelling of 228451 in words is "two hundred twenty-eight thousand, four hundred fifty-one".