255810797 has 4 divisors (see below), whose sum is σ = 279066336. Its totient is φ = 232555260.

The previous prime is 255810787. The next prime is 255810803. The reversal of 255810797 is 797018552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255810797 - 2¹⁶ = 255745261 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 (255810727) 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, 11627753 + ... + 11627774.

It is an arithmetic number, because the mean of its divisors is an integer number (69766584).

Almost surely, 2^255810797 is an apocalyptic number.

It is an amenable number.

255810797 is a deficient number, since it is larger than the sum of its proper divisors (23255539).

255810797 is a wasteful number, since it uses less digits than its factorization.

255810797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23255538.

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 255810797 is about 15994.0863133847. The cubic root of 255810797 is about 634.8039546086.

The spelling of 255810797 in words is "two hundred fifty-five million, eight hundred ten thousand, seven hundred ninety-seven".