228137573 has 2 divisors, whose sum is σ = 228137574. Its totient is φ = 228137572.

The previous prime is 228137563. The next prime is 228137627. The reversal of 228137573 is 375731822.

228137573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119290084 + 108847489 = 10922^2 + 10433^2 .

It is a cyclic number.

It is not a de Polignac number, because 228137573 - 2⁴ = 228137557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228137563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114068786 + 114068787.

It is an arithmetic number, because the mean of its divisors is an integer number (114068787).

Almost surely, 2^228137573 is an apocalyptic number.

It is an amenable number.

228137573 is a deficient number, since it is larger than the sum of its proper divisors (1).

228137573 is an equidigital number, since it uses as much as digits as its factorization.

228137573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 228137573 is about 15104.2236808119. The cubic root of 228137573 is about 611.0343224201.

It can be divided in two parts, 2281375 and 73, that multiplied together give a triangular number (166540375 = T₁₈₂₅₀).

The spelling of 228137573 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, five hundred seventy-three".