255671978 has 8 divisors (see below), whose sum is σ = 383651040. Its totient is φ = 127788300.

The previous prime is 255671971. The next prime is 255671981. The reversal of 255671978 is 879176552.

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

It is not an unprimeable number, because it can be changed into a prime (255671971) 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, 16718 + ... + 28121.

It is an arithmetic number, because the mean of its divisors is an integer number (47956380).

Almost surely, 2^255671978 is an apocalyptic number.

255671978 is a deficient number, since it is larger than the sum of its proper divisors (127979062).

255671978 is a wasteful number, since it uses less digits than its factorization.

255671978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47692.

The product of its digits is 1058400, while the sum is 50.

The square root of 255671978 is about 15989.7460267510. The cubic root of 255671978 is about 634.6891056703.

The spelling of 255671978 in words is "two hundred fifty-five million, six hundred seventy-one thousand, nine hundred seventy-eight".