255763997 has 16 divisors (see below), whose sum is σ = 289915200. Its totient is φ = 224167680.

The previous prime is 255763993. The next prime is 255764011. The reversal of 255763997 is 799367552.

It is a cyclic number.

It is not a de Polignac number, because 255763997 - 2² = 255763993 is a prime.

It is a super-2 number, since 2×255763997² = 130830444322832018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255763993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12347 + ... + 25767.

It is an arithmetic number, because the mean of its divisors is an integer number (18119700).

Almost surely, 2^255763997 is an apocalyptic number.

It is an amenable number.

255763997 is a deficient number, since it is larger than the sum of its proper divisors (34151203).

255763997 is a wasteful number, since it uses less digits than its factorization.

255763997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516.

The product of its digits is 3572100, while the sum is 53.

The square root of 255763997 is about 15992.6232057158. The cubic root of 255763997 is about 634.7652402706.

The spelling of 255763997 in words is "two hundred fifty-five million, seven hundred sixty-three thousand, nine hundred ninety-seven".