228372553 has 2 divisors, whose sum is σ = 228372554. Its totient is φ = 228372552.

The previous prime is 228372499. The next prime is 228372569. The reversal of 228372553 is 355273822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228372544 + 9 = 15112^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 228372553 - 2⁹ = 228372041 is a prime.

It is not a weakly prime, because it can be changed into another prime (228372653) 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 as a sum of consecutive naturals, namely, 114186276 + 114186277.

It is an arithmetic number, because the mean of its divisors is an integer number (114186277).

Almost surely, 2^228372553 is an apocalyptic number.

It is an amenable number.

228372553 is a deficient number, since it is larger than the sum of its proper divisors (1).

228372553 is an equidigital number, since it uses as much as digits as its factorization.

228372553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 37.

The square root of 228372553 is about 15112.0002977766. Note that the first 3 decimals coincide. The cubic root of 228372553 is about 611.2440373678.

The spelling of 228372553 in words is "two hundred twenty-eight million, three hundred seventy-two thousand, five hundred fifty-three".