228978601 has 2 divisors, whose sum is σ = 228978602. Its totient is φ = 228978600.

The previous prime is 228978599. The next prime is 228978611. The reversal of 228978601 is 106879822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225720576 + 3258025 = 15024^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 228978601 - 2¹ = 228978599 is a prime.

Together with 228978599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (228978611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114489300 + 114489301.

It is an arithmetic number, because the mean of its divisors is an integer number (114489301).

Almost surely, 2^228978601 is an apocalyptic number.

It is an amenable number.

228978601 is a deficient number, since it is larger than the sum of its proper divisors (1).

228978601 is an equidigital number, since it uses as much as digits as its factorization.

228978601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 228978601 is about 15132.0388910417. The cubic root of 228978601 is about 611.7842599318.

The spelling of 228978601 in words is "two hundred twenty-eight million, nine hundred seventy-eight thousand, six hundred one".