255191455 has 8 divisors (see below), whose sum is σ = 313351632. Its totient is φ = 199405248.

The previous prime is 255191441. The next prime is 255191467. The reversal of 255191455 is 554191552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255191455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593254 + ... + 593683.

It is an arithmetic number, because the mean of its divisors is an integer number (39168954).

Almost surely, 2^255191455 is an apocalyptic number.

255191455 is a deficient number, since it is larger than the sum of its proper divisors (58160177).

255191455 is a wasteful number, since it uses less digits than its factorization.

255191455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186985.

The product of its digits is 45000, while the sum is 37.

The square root of 255191455 is about 15974.7129864671. The cubic root of 255191455 is about 634.2912339103.

The spelling of 255191455 in words is "two hundred fifty-five million, one hundred ninety-one thousand, four hundred fifty-five".