228201577 has 8 divisors (see below), whose sum is σ = 232207560. Its totient is φ = 224219520.

The previous prime is 228201563. The next prime is 228201587. The reversal of 228201577 is 775102822.

It can be written as a sum of positive squares in 4 ways, for example, as 1879641 + 226321936 = 1371^2 + 15044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228201577 - 2¹¹ = 228199529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228201527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13827 + ... + 25447.

It is an arithmetic number, because the mean of its divisors is an integer number (29025945).

Almost surely, 2^228201577 is an apocalyptic number.

It is an amenable number.

228201577 is a deficient number, since it is larger than the sum of its proper divisors (4005983).

228201577 is a wasteful number, since it uses less digits than its factorization.

228201577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11963.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 228201577 is about 15106.3422773350. The cubic root of 228201577 is about 611.0914589738.

The spelling of 228201577 in words is "two hundred twenty-eight million, two hundred one thousand, five hundred seventy-seven".