255998751 has 8 divisors (see below), whose sum is σ = 341424384. Its totient is φ = 170619480.

The previous prime is 255998683. The next prime is 255998753. The reversal of 255998751 is 157899552.

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

It is not a de Polignac number, because 255998751 - 2⁷ = 255998623 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 255998694 and 255998703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255998753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4480 + ... + 23066.

It is an arithmetic number, because the mean of its divisors is an integer number (42678048).

Almost surely, 2^255998751 is an apocalyptic number.

255998751 is a deficient number, since it is larger than the sum of its proper divisors (85425633).

255998751 is a wasteful number, since it uses less digits than its factorization.

255998751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23181.

The product of its digits is 1134000, while the sum is 51.

The square root of 255998751 is about 15999.9609687024. The cubic root of 255998751 is about 634.9593881481.

The spelling of 255998751 in words is "two hundred fifty-five million, nine hundred ninety-eight thousand, seven hundred fifty-one".