255047189 has 4 divisors (see below), whose sum is σ = 255459840. Its totient is φ = 254634540.

The previous prime is 255047087. The next prime is 255047201. The reversal of 255047189 is 981740552.

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 a de Polignac number, because none of the positive numbers 2^k-255047189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255044189) 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, 205397 + ... + 206634.

It is an arithmetic number, because the mean of its divisors is an integer number (63864960).

Almost surely, 2^255047189 is an apocalyptic number.

It is an amenable number.

255047189 is a deficient number, since it is larger than the sum of its proper divisors (412651).

255047189 is an equidigital number, since it uses as much as digits as its factorization.

255047189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412650.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 255047189 is about 15970.1968992245. The cubic root of 255047189 is about 634.1716845727.

The spelling of 255047189 in words is "two hundred fifty-five million, forty-seven thousand, one hundred eighty-nine".