228252557 has 16 divisors (see below), whose sum is σ = 266333760. Its totient is φ = 193681152.

The previous prime is 228252553. The next prime is 228252571. The reversal of 228252557 is 755252822.

It is a cyclic number.

It is not a de Polignac number, because 228252557 - 2² = 228252553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228252557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228252551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2507 + ... + 21512.

It is an arithmetic number, because the mean of its divisors is an integer number (16645860).

Almost surely, 2^228252557 is an apocalyptic number.

It is an amenable number.

228252557 is a deficient number, since it is larger than the sum of its proper divisors (38081203).

228252557 is a wasteful number, since it uses less digits than its factorization.

228252557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24092.

The product of its digits is 112000, while the sum is 38.

The square root of 228252557 is about 15108.0295538498. The cubic root of 228252557 is about 611.1369613222.

The spelling of 228252557 in words is "two hundred twenty-eight million, two hundred fifty-two thousand, five hundred fifty-seven".