255730237 has 4 divisors (see below), whose sum is σ = 292263136. Its totient is φ = 219197340.

The previous prime is 255730229. The next prime is 255730259. The reversal of 255730237 is 732037552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255730237 - 2³ = 255730229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255730217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18266439 + ... + 18266452.

It is an arithmetic number, because the mean of its divisors is an integer number (73065784).

Almost surely, 2^255730237 is an apocalyptic number.

It is an amenable number.

255730237 is a deficient number, since it is larger than the sum of its proper divisors (36532899).

255730237 is an equidigital number, since it uses as much as digits as its factorization.

255730237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36532898.

The product of its (nonzero) digits is 44100, while the sum is 34.

The square root of 255730237 is about 15991.5676842516. The cubic root of 255730237 is about 634.7373100723.

Adding to 255730237 its reverse (732037552), we get a palindrome (987767789).

The spelling of 255730237 in words is "two hundred fifty-five million, seven hundred thirty thousand, two hundred thirty-seven".