228236501 has 2 divisors, whose sum is σ = 228236502. Its totient is φ = 228236500.

The previous prime is 228236479. The next prime is 228236507. The reversal of 228236501 is 105632822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213598225 + 14638276 = 14615^2 + 3826^2 .

It is a cyclic number.

It is not a de Polignac number, because 228236501 - 2¹⁰ = 228235477 is a prime.

It is a Chen prime.

It is equal to p_12550925 and since 228236501 and 12550925 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228236507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114118250 + 114118251.

It is an arithmetic number, because the mean of its divisors is an integer number (114118251).

Almost surely, 2^228236501 is an apocalyptic number.

It is an amenable number.

228236501 is a deficient number, since it is larger than the sum of its proper divisors (1).

228236501 is an equidigital number, since it uses as much as digits as its factorization.

228236501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 228236501 is about 15107.4981714379. The cubic root of 228236501 is about 611.1226312233.

It can be divided in two parts, 2282 and 36501, that added together give a palindrome (38783).

The spelling of 228236501 in words is "two hundred twenty-eight million, two hundred thirty-six thousand, five hundred one".