228333517 has 2 divisors, whose sum is σ = 228333518. Its totient is φ = 228333516.

The previous prime is 228333467. The next prime is 228333541. The reversal of 228333517 is 715333822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224670121 + 3663396 = 14989^2 + 1914^2 .

It is a cyclic number.

It is not a de Polignac number, because 228333517 - 2⁷ = 228333389 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228333557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114166758 + 114166759.

It is an arithmetic number, because the mean of its divisors is an integer number (114166759).

Almost surely, 2^228333517 is an apocalyptic number.

It is an amenable number.

228333517 is a deficient number, since it is larger than the sum of its proper divisors (1).

228333517 is an equidigital number, since it uses as much as digits as its factorization.

228333517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 228333517 is about 15110.7086862265. The cubic root of 228333517 is about 611.2092084861.

The spelling of 228333517 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, five hundred seventeen".