255780151 has 4 divisors (see below), whose sum is σ = 279032904. Its totient is φ = 232527400.

The previous prime is 255780143. The next prime is 255780169. The reversal of 255780151 is 151087552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255780151 - 2³ = 255780143 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 (255780121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11626360 + ... + 11626381.

It is an arithmetic number, because the mean of its divisors is an integer number (69758226).

Almost surely, 2^255780151 is an apocalyptic number.

255780151 is a deficient number, since it is larger than the sum of its proper divisors (23252753).

255780151 is a wasteful number, since it uses less digits than its factorization.

255780151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23252752.

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 255780151 is about 15993.1282430924. The cubic root of 255780151 is about 634.7786038687.

The spelling of 255780151 in words is "two hundred fifty-five million, seven hundred eighty thousand, one hundred fifty-one".